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| {{Short description|none}} <!-- "none" is a legitimate description when the title is already adequate; see ] --> | |||
| {{Infobox hurricane season | |||
| {{Use mdy dates|date=June 2019}} | |||
| |Basin=WPac | |||
| {{Infobox tropical cyclone season | |||
| |Year=2011 | |||
| | Basin = WPac | |||
| |Track=2011 Pacific typhoon season summary.png | |||
| | Year = 2011 | |||
| |First storm formed=April 1, 2011 | |||
| | Track = 2011 Pacific typhoon season summary.png | |||
| |Last storm dissipated=Season Still Active | |||
| | First storm formed = April 1, 2011 | |||
| |Strongest storm name=Songda & Nanmadol | |||
| | Last storm dissipated = January 1, 2012 | |||
| |Strongest storm pressure=920 | |||
| |Strongest storm |
| Strongest storm name = ] | ||
| | Strongest storm pressure = 920 | |||
| |Average wind speed=10 | |||
| | Strongest storm winds = 105 | |||
| |Total depressions=25 | |||
| | Average wind speed = 10 | |||
| |Total storms=13 | |||
| |Total |
| Total depressions = 39 | ||
| |Total |
| Total storms = 21 | ||
| | Total hurricanes = 8 | |||
| |Fatalities=310 total | |||
| | Total intense = 4 <small>(unofficial)</small> | |||
| |Damages=928.56 | |||
| | ACE Index = 187.14 | |||
| |Season timeline= | |||
| | Fatalities = 3,111 total | |||
| |five seasons= ], ], '''2011''', ], ]}} | |||
| | Damages = 7680 <!-- 7,680.47 --> | |||
| | Season timeline = Timeline of the 2011 Pacific typhoon season | |||
| | five seasons = ], ], '''2011''', ], ] | |||
| | Atlantic season = 2011 Atlantic hurricane season | |||
| | East Pacific season = 2011 Pacific hurricane season | |||
| | North Indian season = 2011 North Indian Ocean cyclone season | |||
| }} | |||
| The '''2011 Pacific typhoon season''' was a below average season that produced a total of 21 named storms, 8 typhoons, and four super typhoons. This season was much more active than the ], although both seasons were below the Pacific typhoon average of 26. The season ran throughout 2011, though most tropical cyclone tend to ] between May and October. The season's first named storm, ], developed on May 7 while the season's last named storm, ] dissipated on December 19. | |||
| The season was also much deadlier and destructive than the previous season. ] affected many countries during August. ] and ] made landfall over in Japan and were the most destructive since ]. ] was the most powerful to strike China since ]. ], a late but weak cyclone, affected southern ] and killed 2546 people. | |||
| The scope of this article is limited to the Pacific Ocean to the north of the equator between ] and the ]. Within the Northwestern Pacific Ocean, there are two separate agencies who assign names to tropical cyclones which can often result in a cyclone having two names. The ] will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least {{convert|65|km/h|mph|abbr=on}} anywhere in the basin. Whilst the ] assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had a name assigned to it by the Japan Meteorological Agency. Tropical depressions that are monitored by the United States' ] are given a number with a "W" suffix. | |||
| The '''2011 Pacific typhoon season''' is a current event in which ] form in the Western ]. The season will run throughout 2011 with most tropical cyclones forming between May and November. The scope of this article is limited to the Pacific Ocean to the north of the equator between ] and the ]. Within the Northwestern Pacific Ocean, there are two separate agencies who assign names to tropical cyclones which can often result in a cyclone having two names. The ] will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 km/h, (40 mph) anywhere in the basin. Whilst the ] assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had a name assigned to it by the Japan Meteorological Agency. Tropical depressions that are monitored by the United States' ] are given a number with a "W" suffix. On average, 27 storms form in this basin every year. | |||
| __TOC__ | __TOC__ | ||
| {{Clear}} | {{Clear}} | ||
| ==Seasonal forecasts== | ==Seasonal forecasts== | ||
| {| class=" |
{| class="wikitable" style="float:right" | ||
| |- style="background:#ccccff" | |||
| | align="center"|<small>'''Forecast<br>Center'''</small> || align="center"|'''Date''' || align="center"|'''<small>Total<br>TCs</small>''' || align="center"|'''<small>Tropical<br>storms</small>''' || align="center"|'''<small>Total<br>Typhoons</small>''' || align="center"|'''<small>Intense<br>TCs</small>''' ||<small>Source</small> | |||
| |- | |- | ||
| ! TSR forecasts<br />Date !! Tropical<br />storms !! Total<br />Typhoons !! Intense<br />TCs !! ACE !! Ref | |||
| |align="left"|GCACIC || align="left"|<small>Average (1950–2000)</small> || 31 || 27 || 17 || – ||<ref name="CUHK May">{{Cite web|publisher=City University of Hong Kong|work=Guy Carpenter Asia-Pacific Climate Impact Center|url=http://weather.cityu.edu.hk/tc_forecast/2011_forecast_APR.htm|date=2010-05-09|accessdate=2011-05-10|author=Unattributed|title=May 2011 Predictions of Seasonal Tropical Cyclone Activity over the Western North Pacific}}</ref> | |||
| |- | |- | ||
| | |
| <small>Average (1965–2010)</small> || 26.3 || 16.4 || 8.5 || 295 || <ref name="TSR March">{{cite report|title=Extended Range Forecast for Northwest Pacific Typhoon Activity in 2011 |url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastMar2011.pdf |date=March 8, 2011 |author1=Saunders, Mark |author2=Lea, Adam |archive-date=March 21, 2011 |access-date=August 6, 2013 |publisher=Tropical Storm Risk Consortium |archive-url=https://web.archive.org/web/20110321224503/http://www.tropicalstormrisk.com/docs/TSRNWPForecastMar2011.pdf |url-status=live }}</ref> | ||
| |- | |- | ||
| | |
| March 8, 2011 || 27.8 || 17.5 || 7.8 || 275 || <ref name="TSR March" /> | ||
| |- | |- | ||
| | |
| May 5, 2011 || 28.0 || 17.7 || 7.6 || 266 || <ref name="TSR May">{{cite report|date=March 8, 2011 |author2=Lea, Adam |title=May Forecast Update for Northwest Pacific Typhoon Activity in 2011 |url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastMay2011.pdf |access-date=August 6, 2013 |archive-date=October 4, 2011 |author=Saunders, Mark |archive-url=https://web.archive.org/web/20111004134053/http://www.tropicalstormrisk.com/docs/TSRNWPForecastMay2011.pdf |publisher=Tropical Storm Risk Consortium |url-status=live }}</ref> | ||
| |- | |- | ||
| | July 4, 2011 || 28.3 || 18.1 || 8.4 || 294 || <ref name="TSR July">{{cite report|date=July 4, 2011 |title=July Forecast Update for Northwest Pacific Typhoon Activity in 2011 |url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastJul2011.pdf |access-date=August 6, 2013 |url-status=live |archive-url=https://web.archive.org/web/20111004134053/http://www.tropicalstormrisk.com/docs/TSRNWPForecastMay2011.pdf |archive-date=October 4, 2011 |publisher=Tropical Storm Risk Consortium |author2=Lea, Adam |author=Saunders, Mark }}</ref> | |||
| |align="left"|GCACIC || align="left"|May 9, 2011 || 31 || 27 || 16 || – ||<ref name="CUHK May"/> | |||
| |- | |- | ||
| | August 5, 2011 || 28.2 || 17.9 || 8.0 || 281 || <ref name="TSR August">{{cite report|date=August 5, 2011 |title=August Forecast Update for Northwest Pacific Typhoon Activity in 2011 |url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastAug2011.pdf |access-date=August 6, 2013 |url-status=live |archive-url=https://web.archive.org/web/20111004134242/http://www.tropicalstormrisk.com/docs/TSRNWPForecastAug2011.pdf |author2=Lea, Adam |archive-date=October 4, 2011 |publisher=Tropical Storm Risk Consortium |author=Saunders, Mark }}</ref> | |||
| |align="left"|] || align="left"|June 28, 2011 || – || 22–26 || – || – ||<ref name="CWB">{{Cite web|publisher=Central Weather Bureau|url=http://www.cwb.gov.tw/V6/news/Newsbb/EN/1000628e.doc|title=Three to Five Typhoons Expected to Hit Taiwan in 2011|date=2011-06-28|author=Unattributed|accessdate=2011-06-28}}</ref> | |||
| |- | |- | ||
| ! Other forecasts<br />Date !! Forecast<br />Center !! colspan=2| Period !! Systems !! Ref | |||
| |align="left"|GCACIC ||align="left"|July 4, 2011 || 31 || 27 || 17 || – ||<ref name="CUHK July">{{Cite web|publisher=City University of Hong Kong|author=Unattributed|title=Updated Prediction of Seasonal Tropical Cyclone Activity over the Western North Pacific for 2011|date=2011-07-04|url=http://aposf02.cityu.edu.hk/~mcg/tc_forecast/2011_forecast_JUN.htm|accessdate=2010-07-11|work=Guy Carpenter Asia-Pacific Climate Impact Center}}</ref> | |||
| |- | |- | ||
| | January 2011 || PAGASA || colspan=2| January 1 – December 31 || 20–23 tropical cyclones || | |||
| |align="left"|TSR || align="left"|July 4, 2011 || – || 28.3 || 18.1 || 8.4 ||<ref name="TSR July">{{Cite web|date=2011-07-04|author1=Saunders, Mark|title=July Forecast Update for Northwest Pacific Typhoon Activity in 2011|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastJul2011.pdf|accessdate=2011-07-04|archivedate=2011-07-04|archiveurl=http://www.webcitation.org/5yaM6Nb8j|publisher=Tropical Storm Risk Consortium|author2=Lea, Adam}}</ref> | |||
| |- | |- | ||
| | June 30, 2011 || CWB || colspan=2| January 1 – December 31 || 22–26 tropical storms || <ref name="CWB">{{cite report|location=Taiwan|publisher=Central Weather Bureau|url=http://www.cwb.gov.tw/V7/news/Newsbb/EN/1000628e.doc|title=Three to Five Typhoons Expected to Hit Taiwan in 2011|date=June 28, 2011|author=Weather Forecast Center|access-date=June 28, 2011|format=.doc|archive-date=September 18, 2018|archive-url=https://web.archive.org/web/20180918031813/https://www.cwb.gov.tw/V7/news/Newsbb/EN/1000628e.doc|url-status=dead}}</ref> | |||
| |align="left"|TSR || align="left"|August 5, 2011 || – || 28.2 || 17.9 || 8.0 ||<ref name="TSR Aug">{{Cite web|date=2011-08-05|author1=Saunders, Mark|title=July Forecast Update for Northwest Pacific Typhoon Activity in 2011|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastAug2011.pdf|accessdate=2011-08-25|publisher=Tropical Storm Risk Consortium|author2=Lea, Adam}}</ref> | |||
| |- | |- | ||
| ! !! Forecast<br />Center !! Tropical<br />cyclones !! Tropical<br />storms !! Typhoons !! Ref | |||
| |align="left"|] || align="left"|'''Actual activity''' || 25 || 13 || 5 || – || | |||
| |- | |- | ||
| | |
| '''Actual activity''': || JMA || 38 || 21 || 8 || | ||
| |- | |- | ||
| | '''Actual activity''': || JTWC || 27 || 18 || 10 || | |||
| |- | |||
| | '''Actual activity''': || PAGASA || 19 || 14 || 6 || | |||
| |} | |} | ||
| During each season several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country. | During each season, several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country.<ref name="TSR May"/> These agencies include the Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC), of the ], the Tropical Storm Risk <small>(TSR)</small> Consortium of the ], and the Taiwan's ].<ref name="TSR May"/><ref name="CWB"/> | ||
| ===City University of Hong Kong=== | |||
| Since the ], the Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC), of the ] (CityUHK), have issued ] for each upcoming typhoon season. On May 4 and July 5, 2011, the GCACIC issued forecasts which predicted the amount of tropical cyclones, tropical storms and typhoons there would be during 2011 as well as for how many tropical cyclones will make landfall on China or pass within 100 km (60 mi) of the Korean Peninsula or Japan.<ref name="CUHK May"/> | |||
| This season the GCACIC predicted in May that 31 tropical cyclones, 27 tropical storms, and 17 typhoons would either form or move into the North Western Pacific this year.<ref name="CUHK May"/> In their July forecast, the GCACIC lowered their prediction for the number of tropical storms developing into a typhoon by one which they blamed on the strength of the India-Burma trough.<ref name="CUHK July"/> For Southern China the GCACIC predicted in May that seven tropical cyclones would make landfall, during the year compared to an average of five.<ref name="CUHK May"/> They further predicted that five of the cyclones would make landfall on Southern China between May and August, while the other two would landfall between September and December.<ref name="CUHK May"/> After two tropical cyclones had made landfall on Southern China during June, the July GCACIC forecast predicted that seven tropical cyclones would make landfall, during the main season between July and December.<ref name="CUHK July"/> For the Korean Peninsular and Japan, the GCACIC predicted in May that six tropical cyclones would affect either Japan or the peninsular during the year compared to an average of four, and predicted that there would be an above average amount of landfalls on Japan.<ref name="CUHK May"/> After three tropical cyclones affected the region in May and June, the GCACIC predicted that seven tropical cyclones would affect either the Korean Peninsular or Japan during the main part of the season.<ref name="CUHK July"/> | |||
| During January 2011, the ] <small>(PAGASA)</small> predicted that between twenty and twenty-three tropical cyclones were likely to develop and/or enter the ] during 2011.<ref name="PAGJAN">{{cite news|date=January 7, 2010|title=Cold weather affects Benguet mummies|newspaper=Manila Bulletin}}</ref> On March 20 the ], predicted that the typhoon season in Hong Kong would be near to above normal with six to nine tropical cyclones passing within {{convert|500|km|mi|round=5|abbr=on}} of the territory against an average of around 6.<ref>{{cite web |url=http://www.weather.gov.hk/dhkovoice/speech20110323e.pdf |title=Speech by Dr. B Y Lee, Director of the Hong Kong Observatory March 23, 2011 |date=March 23, 2011 |author=Lee, B.Y. |publisher=Hong Kong Observatory |access-date=August 7, 2013 |archive-date=March 4, 2016 |archive-url=https://web.archive.org/web/20160304072907/http://www.weather.gov.hk/dhkovoice/speech20110323e.pdf |url-status=dead }}</ref> On March 30, the TSR Consortium released their first forecast of the season and predicted that the basin would see a near average season with 27.8 tropical storms, 17.5 typhoons, 7.8 "intense" typhoons and an ACE index of about 275.{{#tag:ref|According to the TSR, an intense tropical cyclone is a tropical cyclone with maximum 1-minute sustained winds greater than {{convert|175|km/h|mph|abbr=on|round=5}}.<ref name="TSR March"/>|group="nb"}}<ref name="TSR March"/> In early April, the ] <small>(CMA)</small> predicted that between 24 and 26 tropical storms would develop or move into the basin during the year, which it noted was higher than the previous total of 14.<ref name="CMA">{{cite conference|title=Member Report: China |url=http://www.typhooncommittee.org/44th/Docs/item4_teco/item4.2%20Members%20report/Member%20Report_China_2011.pdf |date=January 30, 2012 |conference=Typhoon Committee 44th session |publisher=The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee |archive-url=https://web.archive.org/web/20160303222344/http://www.typhooncommittee.org/44th/Docs/item4_teco/item4.2%20Members%20report/Member%20Report_China_2011.pdf |archive-date=March 3, 2016 |page=22 |author=China Meteorological Administration |access-date=August 6, 2013 |url-status=live }}</ref> They also predicted that between seven and nine tropical storms would make landfall on China, with the first landing taking place before June 29 and the last landing taking place after October 7.<ref name="CMA"/> On April 26, the ] predicted that two tropical storms would affect Thailand during 2011, with one affecting Upper Thailand during August or September, while one was expected to move through Southern Thailand during October or November.<ref>{{cite report|access-date=August 7, 2013|url=http://www.tmd.go.th/programs%5Cuploads%5Cforecast%5C2011-04-2d6_Seasonal_EN_093555.pdf|title=Early May to mid October 2011|type=Weather outlook for Thailand during Rainy Season|date=April 26, 2011|publisher=Thai Meteorological Department}}{{dead link|date=February 2017|bot=medic}}{{cbignore|bot=medic}}</ref> | |||
| ===Tropical Storm Risk Consortium=== | |||
| Since the ], the Tropical Storm Risk Consortium (TSR) of ] have issued forecasts of activity for each upcoming typhoon season.<ref name="TSR March"/> Forecasts on the number of tropical storms, typhoons and intense typhoons there would be during 2011 in the Western Pacific were released in March, May, July and August.<ref group="nb">According to TSR: An intense typhoon is a typhoon that has one-minute winds of at least 175 km/h (110 mph); according to the JMA, an intense typhoon has ten-minute winds of at least 54 m/s (105 kt)</ref> In all off their forecasts this year, TSR predicted that the season would see activity close to the average with 28 tropical storms, 18 typhoons and 8 intense typhoons developing during the season.<ref name="TSR March"/><ref name="TSR May"/><ref name="TSR July"/> | |||
| During May within its first outlook for the year, the GCACIC predicted that the season would be near average with 31 tropical cyclones, 27 tropical storms and 17 typhoons developing during the season.<ref name="CUHK May">{{cite report|publisher=City University of Hong Kong |author=Guy Carpenter Asia-Pacific Climate Impact Center |url=http://www.cityu.edu.hk/gcacic/Research%20Brief_2011-02.pdf |date=May 9, 2010 |access-date=August 6, 2013 |title=May 2011 Predictions of Seasonal Tropical Cyclone Activity over the Western North Pacific |archive-url=https://web.archive.org/web/20120616082241/http://www.cityu.edu.hk/gcacic/Research%20Brief_2011-02.pdf |archive-date=June 16, 2012 |url-status=live }}</ref> They also predicted that seven tropical cyclones would make landfall on Southern China, between May and December, compared with an average of five while predicting that six tropical cyclones during the whole year compared to an average of four tropical cyclones.<ref name="CUHK May"/> TSR revised its initial prediction during May and subsequently predicted that 28.0 tropical storms, 17.7 typhoons, 7.6 "intense" typhoons and an ACE index of about 266.<ref name="TSR May"/> In late June after a near-normal start to the season Taiwan's ] predicted that the season, would be near average of 25.7 with 22–26 tropical storms occurring over the basin during 2011.<ref name="CWB"/> Between three and five of the systems were predicted to affect Taiwan, compared to an average of around 3.6.<ref name="CWB"/> Within its July forecast update, the GCACIC predicted that seven tropical cyclones would make landfall on Southern China, between July and December compared to an average of four and that there would now be 16 typhoons due to the strength of the India-Burma trough.<ref name="CUHK July">{{cite report|publisher=City University of Hong Kong |title=Updated Prediction of Seasonal Tropical Cyclone Activity over the Western North Pacific for 2011 |date=July 4, 2011 |archive-date=June 16, 2012 |url=http://www.cityu.edu.hk/gcacic/Research%20Brief_2011-04.pdf |access-date=July 11, 2010 |author=Guy Carpenter Asia-Pacific Climate Impact Center |archive-url=https://web.archive.org/web/20120616082341/http://www.cityu.edu.hk/gcacic/Research%20Brief_2011-04.pdf |url-status=live }}</ref> They also predicted that seven tropical cyclones would pass within {{convert|100|km|mi|abbr=on}} of the Korean Peninsula or Japan, during July and December compared to an average of around three.<ref name="CUHK July"/> Within its July update, TSR predicted that the ACE index would be about 194, after raising its prediction for the number of tropical storms to 28.0, typhoons to 18.1 and intense typhoons to 8.4.<ref name="TSR July"/> On August 4, TSR subsequently slightly revised these predictions within its final update for 2011 to 28.2 tropical storms, 17.9 typhoons, 8.0 "intense" typhoons and an ACE index of about 281.<ref name="TSR August"/> | |||
| ===National meteorological service predictions=== | |||
| On January 17, the ] (PAGASA) reported that they were expecting between 20 and 22 tropical cyclones to pass through the ] during 2011.<ref name="PAGJAN">{{Cite web|author=Dexter See|url=http://www.mb.com.ph/node/299048/cold-weather-affect|date=2010-01-07|title=Cold weather affects Benguet mummies|publisher=Manila Bulletin|accessdate=2011-04-03}}</ref> On March 23 the Hong Kong Observatory (HKO), reported that they had predicted that 6-9 tropical cyclones would affect Hong Kong during the season.<ref>{{Cite web|url=http://www.webcitation.org/5qvRCmIlt|title=Speech by Dr. B Y Lee, Director of the Hong Kong Observatory 2011-03-23|date=2011-03-23|last=Lee|first=B.Y|publisher=Hong Kong Observatory|accessdate=2010-04-03}}</ref> On April 26, the Thai Meteorological Department predicted that 2 tropical storms would affect Thailand during 2011. They predicted that 1 would move through Vietnam and affect Upper Thailand, during August or September. While the second tropical storm was expected to move through Southern Thailand during October or November.<ref>{{Cite web|author=Unattributed|url=http://www.tmd.go.th/programs%5Cuploads%5Cforecast%5C2011-04-26_Seasonal_EN_093555.pdf|archiveurl=http://www.webcitation.org/5yaKhMPZx|publisher=Thai Meteorological Department|date=2011-04-26|accessdate=2011-05-10|archivedate=2011-05-10|title=Weather outlook for Thailand during Rainy Season (Early May to mid October 2011)}}</ref> On June 30, Taiwan's ] predicted that the 2011 season would be near its normal climatic average of 25.7, and predicted that 22-26 tropical storms, would occur over the Western Pacific during 2011, with 3 to 5 of them affecting Taiwan.<ref name="CWB"/> | |||
| <!-- After Vietnam was hit by Tropical Depression 01W in January, the Vietnamese National Center for Hydro Meteorological forecasts predicted in May that 6-7 tropical cyclones would affect Vietnam during 2010.<ref>{{Cite web|url=http://www.webcitation.org/5qvRY0Fgs|title=Rainy season outlook for 2010 (from May to October)|author=Staff Writer|year=2010|publisher=Vietnamese National Center for Hydro Meteorological forecasts|accessdate=2010-08-29}}</ref> After the slow start to the season, PAGASA released a new prediction on July 5 stating that they now only expected 13-15 tropical cyclones to pass through the region.<ref name="PAGJul">{{Cite web|url=http://www.webcitation.org/5r0BV9qVk|date=2010-01-07|work=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=PAGASA: Only 13 to 15 cyclones to pass through RP in 2010|author=Staff Writer|publisher=GMA News.TV|accessdate=2010-01-07}}</ref>--> | |||
| {{Clear}} | {{Clear}} | ||
| ==Seasonal summary== | ==Seasonal summary== | ||
| {{see also|Timeline of the 2011 Pacific typhoon season}} | |||
| <center> | |||
| <div class="center"> | |||
| <timeline> | <timeline> | ||
| ImageSize = width: |
ImageSize = width:1030 height:250 | ||
| PlotArea = top:10 bottom:80 right:20 left:20 | PlotArea = top:10 bottom:80 right:20 left:20 | ||
| Legend = columns: |
Legend = columns:2 left:30 top:58 columnwidth:270 | ||
| AlignBars = early | AlignBars = early | ||
| DateFormat = dd/mm/yyyy | DateFormat = dd/mm/yyyy | ||
| Period = from:01/04/2011 till: |
Period = from:01/04/2011 till:01/01/2012 | ||
| TimeAxis = orientation:horizontal | TimeAxis = orientation:horizontal | ||
| ScaleMinor = grid:black unit:month increment:1 start:01/04/2011 | ScaleMinor = grid:black unit:month increment:1 start:01/04/2011 | ||
| Line 81: | Line 86: | ||
| id:canvas value:gray(0.88) | id:canvas value:gray(0.88) | ||
| id:GP value:red | id:GP value:red | ||
| id:TD value:rgb(0. |
id:TD value:rgb(0.43,0.76,0.92) legend:Tropical_Depression_=_≤62_km/h_(≤39_mph) | ||
| id:TS value:rgb( |
id:TS value:rgb(0.3,1,1) legend:Tropical_Storm_=_62–88_km/h_(39–54_mph) | ||
| id:ST value:rgb(0. |
id:ST value:rgb(0.75,1,0.75) legend:Severe_Tropical_Storm_=_89–117_km/h_(55–72_mph) | ||
| id: |
id:STY value:rgb(1,0.85,0.55) legend:Typhoon_=_118–156_km/h_(73–96_mph) | ||
| id:VSTY value:rgb(1,0.45,0.54) legend:Very_Strong_Typhoon_=_157–193_km/h_(97–119_mph) | |||
| id:VITY value:rgb(0.55,0.46,0.90) legend:Violent_Typhoon_=_≥194_km/h_(≥120_mph) | |||
| Backgroundcolors = canvas:canvas | Backgroundcolors = canvas:canvas | ||
| BarData = | BarData = | ||
| Line 94: | Line 102: | ||
| from:03/04/2011 till:06/04/2011 color:TD text:"Amang" | from:03/04/2011 till:06/04/2011 color:TD text:"Amang" | ||
| from:05/05/2011 till:12/05/2011 color:TS text:"]" | from:05/05/2011 till:12/05/2011 color:TS text:"]" | ||
| from:19/05/2011 till:29/05/2011 color: |
from:19/05/2011 till:29/05/2011 color:VITY text:"]" | ||
| from:31/05/2011 till:02/06/2011 color:TD text:"TD" | from:31/05/2011 till:02/06/2011 color:TD text:"TD" | ||
| from:08/06/2011 till:11/06/2011 color:TS text:"Sarika" | from:08/06/2011 till:11/06/2011 color:TS text:"]" | ||
| from: |
from:14/06/2011 till:15/06/2011 color:TD text:"TD" | ||
| from:16/06/2011 till:25/06/2011 color:TS text:"Haima" | from:16/06/2011 till:25/06/2011 color:TS text:"Haima" | ||
| from:20/06/2011 till:27/06/2011 color:ST text:"Meari" | from:20/06/2011 till:27/06/2011 color:ST text:"]" | ||
| from:08/07/2011 till:10/07/2011 color:TD text:"Goring" | |||
| from:11/07/2011 till:24/07/2011 color:VSTY text:"]" | |||
| barset:break | barset:break | ||
| from: |
from:13/07/2011 till:15/07/2011 color:TS text:"Tokage" | ||
| from:11/07/2011 till:24/07/2011 color:TY text:"]" | |||
| from:14/07/2011 till:16/07/2011 color:TS text:"Tokage" | |||
| from:16/07/2011 till:17/07/2011 color:TD text:"TD" | from:16/07/2011 till:17/07/2011 color:TD text:"TD" | ||
| from:16/07/2011 till:16/07/2011 color:TD text:"TD" | |||
| from:24/07/2011 till:31/07/2011 color:ST text:"]" | from:24/07/2011 till:31/07/2011 color:ST text:"]" | ||
| from:25/07/2011 till:09/08/2011 color: |
from:25/07/2011 till:09/08/2011 color:VSTY text:"]" | ||
| from:31/07/2011 till:02/08/2011 color:TD text:"Lando" | from:31/07/2011 till:02/08/2011 color:TD text:"Lando" | ||
| from: |
from:02/08/2011 till:09/08/2011 color:ST text:"Merbok" | ||
| from:02/08/2011 till:04/08/2011 color:TD text:"TD" | |||
| barset:break | |||
| from: |
from:08/08/2011 till:14/08/2011 color:TD text:"13W" | ||
| from:08/08/2011 till:15/08/2011 color:TD text:"13W" | |||
| from:08/08/2011 till:10/08/2011 color:TD text:"TD" | from:08/08/2011 till:10/08/2011 color:TD text:"TD" | ||
| from:20/08/2011 till:25/08/2011 color:TD text:"TD" | from:20/08/2011 till:25/08/2011 color:TD text:"TD" | ||
| from:21/08/2011 till:31/08/2011 color: |
from:21/08/2011 till:31/08/2011 color:VSTY text:"]" | ||
| barset:break | |||
| from:23/08/2011 till:05/09/2011 color:TY text:"]" | |||
| from: |
from:23/08/2011 till:05/09/2011 color:ST text:"]" | ||
| from:02/09/2011 till:06/09/2011 color:TS text:"Noru" | |||
| from:06/09/2011 till:11/09/2011 color:TS text:"Kulap" | |||
| from:08/09/2011 till:22/09/2011 color:VSTY text:"]" | |||
| from:13/09/2011 till:15/09/2011 color:TD text:"TD" | |||
| from:14/09/2011 till:20/09/2011 color:STY text:"Sonca" | |||
| from:23/09/2011 till:30/09/2011 color:STY text:"]" | |||
| from:24/09/2011 till:27/09/2011 color:TS text:"]" | |||
| from:26/09/2011 till:05/10/2011 color:VSTY text:"]" | |||
| from:09/10/2011 till:14/10/2011 color:TS text:"Banyan" | |||
| from:10/10/2011 till:13/10/2011 color:TD text:"TD" | |||
| barset:break | |||
| from:07/11/2011 till:10/11/2011 color:TD text:"24W" | |||
| from:04/12/2011 till:05/12/2011 color:TD text:"25W" | |||
| from:10/12/2011 till:14/12/2011 color:TD text:"26W" | |||
| from:13/12/2011 till:19/12/2011 color:ST text:"]" | |||
| from:24/12/2011 till:24/12/2011 color:TD text:"TD" | |||
| from:31/12/2011 till:01/01/2012 color:TD text:"TD" | |||
| bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas | bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas | ||
| from:01/04/2011 till:30/04/2011 text:April | from:01/04/2011 till:30/04/2011 text:April | ||
| Line 125: | Line 148: | ||
| from:01/08/2011 till:31/08/2011 text:August | from:01/08/2011 till:31/08/2011 text:August | ||
| from:01/09/2011 till:30/09/2011 text:September | from:01/09/2011 till:30/09/2011 text:September | ||
| from:01/10/2011 till:31/10/2011 text:October | |||
| from:01/11/2011 till:30/11/2011 text:November | |||
| from:01/12/2011 till:01/01/2012 text:December | |||
| </timeline> | </timeline> | ||
| </ |
</div> | ||
| During April two tropical depressions developed but they failed to intensify into tropical storms. Tropical Storm Aere (Bebeng) then developed on May 5, and after causing PHP 2.25 billion in damage to Northeastern Luzon and Eastern Visayas, the name Bebeng was retired by PAGASA. The second tropical storm of the season then developed on May 19, and affected the Philippines, Taiwan and Japan before becoming extratropical to the east of Japan. | |||
| After Tropical Storm Banyan dissipated during October 14, no tropical storms or typhoons were observed within the basin until Tropical Depression 27W developed into Tropical Storm Washi during December 15, due to high vertical windshear and a strong northeast monsoon.<ref>{{cite web |title=Annual Report on the Activities on the RSMC Tokyo - Typhoon Center |url=https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/AnnualReport/2011/Text/Text2011.pdf |publisher=Japan Meteorological Agency |date=2011}}</ref> | |||
| ==Systems== | |||
| ==Storms== | |||
| ===Tropical Depression 01W=== | ===Tropical Depression 01W=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| | WarningCenter = JMA | |||
| |Formed=April 1 | |||
| | Image = Tropical_Depression_01W_2011-04-01.jpg | |||
| |Dissipated=April 4 | |||
| | Formed = April 1 | |||
| |Image=Tropical Depression 01W 2011-04-01 .jpg | |||
| | Dissipated = April 4 | |||
| |Track=01W 2011 track.png | |||
| | Track = 01W 2011 track.png | |||
| |1-min winds=30 | |||
| | Pressure = 1004 | |||
| |Prewinds= | |||
| |10-min winds=30 | | 10-min winds = 30 | ||
| | 1-min winds = 30 | |||
| |Pressure=1004 | |||
| }} | }} | ||
| On April |
On April 1, the JMA reported that a tropical depression had developed within an area of moderate vertical wind shear about {{convert|510|km|mi|round=5|abbr=on}} to the southeast of ] in Southern ].<ref>{{cite web|publisher=Japan Meteorological Agency |date=April 1, 2011 |url=http://www.jma.go.jp/en/g3/ |title=JMA WWJP25 Warning and Summary April 1, 2011 06z |archive-url=https://archive.today/20240522172752/https://www.webcitation.org/5xcadEqAq?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201104010600.htm |archive-date=May 22, 2024 |access-date=October 27, 2013 |url-status=live }}</ref><ref>{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 1, 2011 |access-date=May 7, 2011 |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=May 23, 2024 |archive-url=https://archive.today/20240523155703/https://www.webcitation.org/5xdgjh6qn?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201104011730.htm |title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans |url-status=dead }}</ref> Over the next day, the system gradually ] further, before the JTWC initiated advisories on the system and designated it as Tropical Depression 01W.<ref>{{cite web|title=Tropical Depression 01W Warning 1 |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 |access-date=October 28, 2013 |author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 2, 2011 |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/ |url-status=dead }}</ref> However, within hours of this, the depression became devoid of convection as ] buffeted the system. This prevented the cyclone from intensifying beyond depression status as it remained nearly stationary.<ref>{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 2, 2011 |access-date=May 7, 2011 |title=Tropical Depression 01W Advisory Two |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201104020900.htm |url-status=dead |archive-url=https://archive.today/20240523155735/https://www.webcitation.org/5xeU9ZRrB?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201104020900.htm |archive-date=May 23, 2024 }}</ref> The JMA continued to monitor the system as a tropical depression for another day before issuing their last warning on the system.<ref>{{cite web|publisher=Japan Meteorological Agency |date=April 4, 2011 |access-date=May 7, 2011 |title=JMA High Seas Forecast for 0600 UTC on 4 April 2011 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref> According to the ]'s brief reports on the storm the day after its dissipated, some of its remnants has travelled towards the mainland and combine with other disturbances from the ], created severe heavy rainings which affects parts of the ] region of the country, with the ] airport being delayed up to hours. <ref>{{cite web | url=https://www.youtube.com/watch?v=qW3EIttoi4k | title=Du bao thoi tiet Quang Tri hom nay ngay mai 3 ngay toi 84 | website=] | date=April 13, 2012 }}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Tropical Depression 02W (Amang)=== | ===Tropical Depression 02W (Amang)=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| | Image = Tropical Depression Amang Apr 5 2011 0355Z.jpg | |||
| |Formed=April 3 | |||
| | |
| Formed = April 3 | ||
| | Dissipated = April 6 | |||
| |Image=Tropical Depression Amang on April 5, 2011 at 0032 UTC.jpg | |||
| |Track=Amang 2011 track.png | | Track = Amang 2011 track.png | ||
| | Pressure = 1000 | |||
| |1-min winds=30 | |||
| | 10-min winds = 30 | |||
| |Prewinds= | |||
| | |
| 1-min winds = 30 | ||
| |Pressure=1000 | |||
| }} | }} | ||
| On March |
On March 30, the JMA began monitoring an area of low pressure located southwest of ].<ref>{{cite web|publisher=Japan Meteorological Agency |date=March 30, 2011 |access-date=May 8, 2011 |title=JMA High Seas Forecast for 1800 UTC on March 30, 2011 |url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201103301800.htm |url-status=dead |archive-url=https://archive.today/20240523155616/https://www.webcitation.org/5xaxB8LYq?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201103301800.htm |archive-date=May 23, 2024 }}</ref> By April 2, the system developed a low-level circulation, though convection appeared disorganized. Exhibiting good ] within a region of weak ], the low was anticipated to develop further over the following several days as it drifted west-northwestward.<ref>{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 2, 2011 |access-date=May 8, 2011 |title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans |url=http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |url-status=dead |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |archive-date=February 16, 2007 }}</ref> After briefly stalling early on April 3, the storm turned towards the east. Additionally, the JMA considered the system sufficiently organized to be declared a tropical depression.<ref>{{cite web|url-status=dead |archive-date=May 2, 2001 |access-date=March 26, 2012 |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-04-03 00z |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency }}</ref><ref>{{cite web|url-status=dead |archive-date=May 2, 2001 |title=JMA WWJP25 Warning and Summary 2011-04-03 06z |access-date=March 26, 2012 |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency }}</ref> As the system was located to the west of ], PAGASA began issuing advisories on the depression as well, assigning it the name "Amang".<ref>{{cite web|publisher=Philippine Atmospheric Geophysical and Astronomical Services Administration |date=April 3, 2011 |access-date=May 8, 2011 |title=Tropical Depression "Amang" Severe Weather Bulletin One |url=http://dynasmon.fortunecity.com/PAGASA.html |url-status=dead |archive-url=https://web.archive.org/web/20090726132915/http://dynasmon.fortunecity.com/PAGASA.html |archive-date=July 26, 2009 }}</ref> Tracking northeastward, the depression eventually developed enough convection to be declared Tropical Depression 02W by the JTWC on April 4. However, this was expected to be brief as a decaying ] approached from the west and prompted the system to undergo an ].<ref>{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 5, 2011 |access-date=May 8, 2011 |title=Prognostic Reasoning for Tropical Depression 02W Advisory One |url=http://weather.noaa.gov/pub/data/raw/wd/wdpn31.pgtw..txt |url-status=live |archive-url=https://web.archive.org/web/20030831153200/http://weather.noaa.gov/pub/data/raw/wd/wdpn31.pgtw..txt |archive-date=August 31, 2003 }}</ref> This intensification prompted the ] (NWS) in ] to issue a ] for the islands of ], ] and ].<ref>{{cite web|author=Michael G. Middlebrooke |work=National Weather Service Office in Tiyan, Guam |publisher=National Oceanic and Atmospheric Administration |date=April 5, 2011 |access-date=May 8, 2011 |title=Tropical Depression 02W Advisory Number One |url=http://gwydir.demon.co.uk/advisories/WTPQ31-PGUM_201104050247.htm |url-status=dead |archive-url=https://archive.today/20240523155819/https://www.webcitation.org/5xiF7ga1T?url=http://gwydir.demon.co.uk/advisories/WTPQ31-PGUM_201104050247.htm |archive-date=May 23, 2024 }}</ref> Interacting with the front and high wind shear, the system became partially exposed and elongated as it moved over cooler waters.<ref>{{cite web|author=Joint Typhoon Warning Center |date=April 5, 2011 |access-date=May 8, 2011 |title=Prognostic Reasoning for Tropical Depression 02W Advisory Three |url=http://weather.noaa.gov/pub/data/raw/wd/wdpn31.pgtw..txt |url-status=live |archive-url=https://web.archive.org/web/20030831153200/http://weather.noaa.gov/pub/data/raw/wd/wdpn31.pgtw..txt |archive-date=August 31, 2003 }}</ref> Early on April 6, the JTWC issued their final advisory on the depression as it began to dissipate over open waters.<ref>{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |date=April 6, 2011 |access-date=May 8, 2011 |title=Tropical Depression 02W Advisory Five (Final) |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Tropical Storm Aere (Bebeng)=== | ===Tropical Storm Aere (Bebeng)=== | ||
| {{main|Tropical Storm Aere (2011)}} | {{main|Tropical Storm Aere (2011)}} | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=May |
| Formed = May 6 | ||
| |Dissipated=May 12 | | Dissipated = May 12 | ||
| |Image |
| Image = Aere 2011-05-07 0230Z.jpg | ||
| |Track=Aere 2011 track.png | | Track = Aere 2011 track.png | ||
| | |
| 10-min winds = 40 | ||
| |category:cat1 | |||
| |10-min winds=40 | |||
| | 1-min winds = 50 | |||
| |Pressure=992 | |||
| | Pressure = 992 | |||
| }} | }} | ||
| Early of May 4, an area of low pressure formed about 140 km (85 mi) to the west of ] Island.<ref>http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt</ref> On that same day, the low pressure starts to strengthen rapidly with improved LLCC, tightly–wrapped shallow convective banding and a well–defined center. On the next day the low pressure starts to move northwest in general direction to the seas east of ] Islands. However it remained almost stationary by afternoon due to the influence of high pressure that located in the northeast of the system. By that time, its LLCC starts to become elongated and the system was also located in favorable sea surface temperatures with low vertical wind shear. Later of that day, its LLCC starts to consolidate again and the system starts to move northwest slowly, whilst the ] upgraded the system into a tropical depression<ref>http://www.jma.go.jp/en/g3/</ref> In the afternoon of May 6, ] upgraded the low pressure into a tropical depression. In the same evening, PAGASA upgraded the low pressure into a tropical depression and assigned its local name 'Bebeng'. In the afternoon of May 7, ] upgraded the tropical depression to a tropical storm, and assigned the name 'Aere'. During the early morning of May 12, the ] downgraded Aere to a tropical depression while south of ]. | |||
| On May 3, the JTWC started to monitor a tropical disturbance that had developed within a monsoon trough about {{convert|140|km|mi|abbr=on}} to the west of ].<ref name="STWA 03/05">{{cite web|author=Joint Typhoon Warning Center|publisher=United States Navy, United States Air Force|access-date=March 10, 2012|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt|archive-url=https://archive.today/20240522172828/https://www.webcitation.org/5yQGmeicP?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201105031400.htm|title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans 2011-05-03 14z|url-status=live|archive-date=May 22, 2024}}</ref> At this time the disturbances low level circulation center was weak and unorganized, while a minimal amount of deep convection was observed around the system.<ref name="STWA 03/05"/> Over the next couple of days the depression gradually developed further in an area of low vertical wind shear before it was declared a tropical depression by the JMA and the JTWC during May 6.<ref name="typ">{{cite conference|title=Summary of the 2011 Pacific Typhoon Season |author=RSMC Tokyo — Typhoon Centre |url=http://www.typhooncommittee.org/44th/Docs/item4_teco/item%204.1%20RSMC/4.1%20add2%20Review%202011%20Typhoon%20Season-RSMC.pdf |date=January 30, 2012 |location=Hangzhou, China |conference=Typhoon Committee 44th session |conference-url=http://www.typhooncommittee.org/44th/ |archive-date=August 26, 2014 |publisher=The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee |archive-url=https://web.archive.org/web/20140826161805/http://www.typhooncommittee.org/44th/Docs/item4_teco/item%204.1%20RSMC/4.1%20add2%20Review%202011%20Typhoon%20Season-RSMC.pdf |page=6 |access-date=March 5, 2012 |url-status=live }}</ref> In the same evening, PAGASA upgraded the low pressure into a tropical depression and assigned its local name 'Bebeng'. On the afternoon of May 7, ] upgraded the depression to a tropical storm and assigned the name 'Aere'. During the early morning of May 12, the ] downgraded Aere to a tropical depression while south of ] as it became a weak extratropical cyclone. Its extratropical remnants finally dissipated on May 15. | |||
| Throughout the Philippines, multiple agencies activated their emergency plans as the storm approached. The ], the ], and the ] were all placed on standby to deploy to areas struck by Aere once the storm passed. Several ports were affected by the storm, stranding 1,379 passengers by the afternoon of May 7.<ref>{{cite web|work=National Disaster Risk Reduction and Management Council|publisher=National Disaster Coordinating Council|date=May 7, 2011|accessdate=May 7, 2011|title=NDRRMC Update Initial Report on Tropical Depression "Bebeng"|url=http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Update%20Initial%20Report%20on%20Tropical%20Depression%20_Bebeng_%207%20May%202011.pdf|format=]}}</ref> According to the ], at least 35 people have been killed and two more are missing as a result of Aere. Agricultural losses are estimated at ]1.37 billion (]31.7 million).<ref name="AereSitRep14">{{cite web|work=National Disaster Risk Reduction and Management Council|publisher=National Disaster Coordinating Council|date=May 16, 2011|accessdate=May 16, 2011|title=NDRRMC Update SitRep No. 14 on Tropical Storm "Bebeng"|url=http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%20No.%2014%20re%20TS%20Bebeng%2016%20May%202011,%206PM.pdf|format=]}}</ref> Widespread flooding and landslides damaged homes, blocked off roads and severed communications. In ], {{convert|377.4|mm|in|abbr=on}} of rain fell in just 24 hours, resulted in significant flash flooding.<ref>{{cite web|work=National Disaster Risk Reduction and Management Council|publisher=National Disaster Coordinating Council|date=May 8, 2011|accessdate=May 8, 2011|title=NDRRMC Update SitRep No. 3 on Tropical Storm "Bebeng"|url=http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%203%20re%20TD%20Bebeng%208May2011%2012%205%20PM.pdf|format=]}}</ref> | |||
| Throughout the Philippines, multiple agencies activated their emergency plans as the storm approached. The ], the ], and the ] were all placed on standby to deploy to areas struck by Aere once the storm passed. Several ports were affected by the storm, stranding 1,379 passengers by the afternoon of May 7.<ref>{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=May 7, 2011 |access-date=May 7, 2011 |title=NDRRMC Update Initial Report on Tropical Depression "Bebeng" |url=http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Update%20Initial%20Report%20on%20Tropical%20Depression%20_Bebeng_%207%20May%202011.pdf |url-status=dead |archive-url=https://web.archive.org/web/20110823020737/http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Update%20Initial%20Report%20on%20Tropical%20Depression%20_Bebeng_%207%20May%202011.pdf |archive-date=August 23, 2011 }}</ref> According to the ], at least 35 people have been killed and two more are missing as a result of Aere. Agricultural losses are estimated at ]1.37 billion (US$31.7 million).<ref name="AereSitRep14">{{cite report|title=Situation Report No. 14 on Tropical Storm "Bebeng" (Aere) |publisher=National Disaster Risk Reduction and Management Center |url=http://www.ndrrmc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%20No.%2014%20re%20TS%20Bebeng%2016%20May%202011,%206PM.pdf |author=Ramos, Benito T. |date=May 16, 2011 |access-date=December 31, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20120502002223/http://www.ndrrmc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%20No.%2014%20re%20TS%20Bebeng%2016%20May%202011%2C%206PM.pdf |archive-date=May 2, 2012 }}</ref> Widespread flooding and landslides damaged homes, blocked off roads and severed communications. In ], {{convert|377.4|mm|in|abbr=on}} of rain fell in just 24 hours, resulted in significant flash flooding.<ref>{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=May 8, 2011 |access-date=May 8, 2011 |title=NDRRMC Update SitRep No. 3 on Tropical Storm "Bebeng" |url=http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%203%20re%20TD%20Bebeng%208May2011%2012%205%20PM.pdf |url-status=dead |archive-url=https://web.archive.org/web/20110823020501/http://ndcc.gov.ph/attachments/article/208/NDRRMC%20Sitrep%203%20re%20TD%20Bebeng%208May2011%2012%205%20PM.pdf |archive-date=August 23, 2011 }}</ref> | |||
| {{clear}} | {{clear}} | ||
| ===Typhoon Songda (Chedeng)=== | ===Typhoon Songda (Chedeng)=== | ||
| {{main|Typhoon Songda (2011)}} | |||
| {{Infobox Hurricane Small | |||
| {{Infobox hurricane small | |||
| |Basin=WPac | |Basin=WPac | ||
| |Formed=May 19 | |Formed=May 19 | ||
| |Dissipated=May 29 | |Dissipated=May 29 | ||
| |Image=Songda |
|Image=2011 Songda.jpg | ||
| |Track=Songda 2011 track.png | |Track=Songda 2011 track.png | ||
| | |
|10-min winds=105 | ||
| | |
|1-min winds=140 | ||
| |Pressure=920 | |Pressure=920 | ||
| }} | }} | ||
| On May 19, the JTWC reported that an area of low pressure had persisted about 510 |
A weak non-tropical system formed within the ] on May 17, as it moved in a westward direction. On May 19, the JTWC reported that an area of low pressure had persisted about {{convert|510|km|mi|abbr=on}} to the southeast of ]. As the system moved towards the northwest under the influence of a subtropical ridge of high pressure, it rapidly consolidated in an area of light to moderate vertical wind shear. The JMA then started to monitor the system as a tropical depression later that day, before the JTWC designated it as Tropical Depression 04W early on May 20. The JTWC then reported later that day that the depression had intensified into a tropical storm with wind speeds of {{convert|65|km/h|mph|abbr=on|round=5}}, however, it later reported that it had overestimated the wind speeds and consequently lowered the storm's status to a tropical depression, based on observations from Yap island. Late on May 21, both the JMA and the JTWC reported that the depression had now become a tropical storm with the JMA naming it as Songda. Over the next couple of days, the system gradually intensified further while moving northwest into PAGASA's area of responsibility. PAGASA named it as Chedeng. At 1200 UTC on May 24, the JTWC reported that Songda had intensified into a typhoon. 12 hours later, the JMA followed suit while the system was located about {{convert|800|km|mi|abbr=on}} to the southeast of ] in the Philippines. It rapidly intensified into a Category 5 typhoon. On the afternoon of May 29, Songda became extratropical south of ].<ref name="May 29">{{cite web|last=Suga|first=Masumi|title=Typhoon Songda Nearing Tokyo Weakens to 'Extratropical Cyclone'|url=https://www.bloomberg.com/news/2011-05-29/typhoon-songda-weakens-to-extratropical-cyclone-.html|publisher=Bloomberg|access-date=August 16, 2012|date=May 29, 2011}}</ref> The ] remnants of Sonda later crossed the ], which was later absorbed by another extratropical cyclone on June 4, and later dissipated completely over Alaska. | ||
| Although Songda remained offshore, heavy rains within the typhoon's ] impacted the Philippines, causing significant flash flooding and landslides. Four fatalities are attributed to the system there.<ref name="SongdaNDCC15">{{cite web|work=National Disaster Risk Reduction and Management Council|publisher=National Disaster Coordinating Council|date=May 31, 2011| |
Although Songda remained offshore, heavy rains within the typhoon's ] impacted the Philippines, causing significant flash flooding and landslides. Four fatalities are attributed to the system there.<ref name="SongdaNDCC15">{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=May 31, 2011 |access-date=August 4, 2011 |title=NDRRMC Update SitRep No. 15 on Typhoon "Chedeng" (Songda) |url=http://ndcc.gov.ph/attachments/article/215/NDRRMC%20Update%20Sitrep%20No.%2015%20CHEDENG31May2011,%206PM.pdf |url-status=dead |archive-url=https://web.archive.org/web/20111004150812/http://ndcc.gov.ph/attachments/article/215/NDRRMC%20Update%20Sitrep%20No.%2015%20CHEDENG31May2011%2C%206PM.pdf |archive-date=October 4, 2011 }}</ref> Further north, ] experienced intense wind gusts, measured up to {{convert|198|km/h|mph|abbr=on}}, along with torrential rain.<ref>{{cite web|author=Unattributed|publisher=吟遊詩人の戯言|date=May 28, 2011|access-date=July 2, 2011|script-title=ja:【台風1102号】沖縄：久米島灯台 風速55メートル|url=http://gurizuri0505.halfmoon.jp/20110528/29502|language=ja}}</ref> Extensive damage took place across the area with losses reaching ]23.2 billion ($287 million);<ref name="SongdaOkinawaDamage">{{cite web|author=Unattributed |publisher=Okinawa Times |date=June 23, 2011 |access-date=July 2, 2011 |script-title=ja:保険支払い２０億円に 台風２号 |url=http://www.okinawatimes.co.jp/article/2011-06-23_19539/ |language=ja |url-status=dead |archive-url=https://web.archive.org/web/20110624232630/http://www.okinawatimes.co.jp/article/2011-06-23_19539/ |archive-date=June 24, 2011 }}</ref> however, there were no fatalities.<ref>{{cite web|author=Unattributed|work=Accuweather|publisher=Star Tribune|date=May 29, 2011|access-date=July 2, 2011|title=57 Injured in Okinawa, Tokyo Next|url=http://www.startribune.com/weather/122801604.html}}</ref> As it became extratropical, Songda brought heavy rains from ] to eastern ], causing significant flooding. At least 13 people were killed in the country and an estimated 400,000 had to be evacuated around Tokyo alone.<ref name="SongdaJapanDeaths">{{cite web|author=Unattributed|publisher=Earthweek|date=June 3, 2011|access-date=July 5, 2011|title=Typhoon Songda Floods Strike Japan Disaster Zone|url=http://www.earthweek.com/2011/ew110603/ew110603e.html|archive-date=June 6, 2011|archive-url=https://web.archive.org/web/20110606081610/http://www.earthweek.com/2011/ew110603/ew110603e.html|url-status=dead}}</ref><ref>{{cite web|author=Unattributed |publisher=おもっしょい愛媛 |date=May 30, 2011 |access-date=July 5, 2011 |script-title=ja:台風２号：県内で車水没、１人死亡 新居浜では避難勧告 ／愛媛 – 毎日新聞 |url=http://ehime.gourmet47.info/modules/news/index.php?page=clipping&clipping_id=4798 |language=ja |url-status=dead |archive-url=https://web.archive.org/web/20120425045037/http://ehime.gourmet47.info/modules/news/index.php?page=clipping&clipping_id=4798 |archive-date=April 25, 2012 }}</ref> | ||
| {{clear}} | |||
| ===Tropical Depression=== | |||
| {{Infobox Hurricane Small | |||
| |Basin=WPac | |||
| |Formed=May 31 | |||
| |Dissipated=June 2 | |||
| |Image=Tropical Depression 31 May 2011.jpg | |||
| |Track= | |||
| |Prewinds=< | |||
| |10-min winds=30 | |||
| |Pressure=1004 | |||
| }} | |||
| During the evening of May 31, the JMA upgraded an area of low pressure to a tropical depression. Initially, the tropical depression was located about 400 km (250 miles) south west of ].<ref name="JMAOutlook5310600z">{{cite web|url=http://www.webcitation.org/5z5V4v7Ck|title=JMA Tropical Cyclone Summary; May 31, 2011|date=2011-05-31|publisher=]|accessdate=1 June 2011}}</ref> The system did not develop further and was downgraded to an area of low pressure by the JMA on June 2. | |||
| {{clear}} | {{clear}} | ||
| ===Tropical Storm Sarika (Dodong)=== | ===Tropical Storm Sarika (Dodong)=== | ||
| {{Main|Tropical Storm Sarika (2011)}} | |||
| {{Infobox Hurricane Small | |||
| {{Infobox tropical cyclone small | |||
| |Basin=WPac | |||
| | Basin = WPac | |||
| |Formed=June 8 | |||
| | |
| Formed = June 8 | ||
| | Dissipated = June 11 | |||
| |Image=Sarika 9 June 2011.jpg | |||
| | |
| Image = Sarika 2011-06-10 0525Z.jpg | ||
| | Track = Sarika 2011 track.png | |||
| |10-min winds=40 | |||
| | |
| 10-min winds = 40 | ||
| | 1-min winds = 30 | |||
| |Pressure=996 | |||
| | Pressure = 996 | |||
| }} | }} | ||
| On early June 8, an area of low pressure formed about 10 |
On early June 8, an area of low pressure formed about {{convert|10|km|mi|abbr=on}} west of ], Philippines. As it moved towards the ] the ] and ] began to monitor the system. In the early morning hours of June 9, the Philippines' ] upgraded the system to a tropical depression and reported the storm center to be about {{convert|450|km|mi|abbr=on}} west of ] in the ]. The next day, the JMA and JTWC upgraded the tropical depression into a tropical storm, with the JMA naming it Sarika. During the morning of June 11, the JTWC downgraded Sarika to a tropical depression after making landfall in ]. The JTWC soon issued their final advisory on Sarika. Sarika made landfall on mainland China with winds of {{convert|75|km/h|mph|abbr=on|round=5}}. | ||
| {{clear}} | |||
| As a result of the storm, 23 people were killed in ], and ten more were declared missing. Damages from Sarika are estimated at $248 million.<ref>{{Cite news|title=Tropical storm leaves 23 dead, 10 missing|url=http://gamutnews.com/20110611/20483/tropical-storm-leaves-23-dead-10-missing.html|date=June 11, 2011|access-date=June 11, 2011|archive-url=https://web.archive.org/web/20110725002001/http://gamutnews.com/20110611/20483/tropical-storm-leaves-23-dead-10-missing.html|archive-date=July 25, 2011|url-status=dead}}</ref> | |||
| ===Tropical Depression=== | |||
| {{Infobox Hurricane Small | |||
| |Basin=WPac | |||
| |Formed=June 15 | |||
| |Dissipated=June 16 | |||
| |Image=June 15, 2011 JMA Tropical Depression.jpg | |||
| |Track= | |||
| |Prewinds=< | |||
| |10-min winds=30 | |||
| |Pressure=1004 | |||
| }} | |||
| Early June 15 an area of low pressure area embedded along the ] located about 250 km west of ]. As is moved towards the ], both the JMA and the JTWC started monitoring it. During the morning of June 15, the JMA upgraded it into a tropical depression. Due to an anticyclone, the system dissipated during the early morning of June 16.{{Citation needed|date=July 2011}} | |||
| {{clear}} | {{clear}} | ||
| ===Tropical Storm Haima (Egay)=== | ===Tropical Storm Haima (Egay)=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=June 16 | | Formed = June 16 | ||
| |Dissipated=June 25 | | Dissipated = June 25 | ||
| |Image |
| Image = Haima June 23 2011 03.20(UTC).jpg | ||
| |Track=Haima 2011 track.png | | Track = Haima 2011 track.png | ||
| |10-min winds=40 | | 10-min winds = 40 | ||
| |1-min winds=35 | | 1-min winds = 35 | ||
| | Pressure = 985 | |||
| |Gust=60 | |||
| |Pressure=985 | |||
| }} | }} | ||
| On June 15, the JTWC started to monitor an area of disturbed weather that was located about 1350 |
Two tropical disturbances formed in an area of convection and moderate vertical wind shear east of ], ] on June 13. Both of them started to interact with each other and the other one absorbed the moisture of the other disturbance. On June 15, the JTWC started to monitor an area of disturbed weather within that disturbance that was located about {{convert|1350|km|mi|abbr=on}}, to the southeast of ], Philippines. Over the next couple of days the system gradually developed further, before late on June 16, the JMA, JTWC and PAGASA, all reported that the system had developed into a tropical depression, with PAGASA naming it as Egay. Egay continued to develop during June 17, as it moved towards the northeast, and on June 18, the JTWC reported that Egay had intensified into a tropical storm. Fluctuations in intensity occurred over the next several days, before the JMA reported that the system had strengthened into a tropical storm on June 22, naming it Haima. The JTWC also followed suit, by upgrading it to a tropical storm again.<ref>{{cite web|title=Tropical storm Haima hits southern China, forcing ships to stop service|url=http://news.xinhuanet.com/english2010/china/2011-06/22/c_13944284.htm|archive-url=https://web.archive.org/web/20110625032202/http://news.xinhuanet.com/english2010/china/2011-06/22/c_13944284.htm|url-status=dead|archive-date=June 25, 2011|publisher=Lu Hui|access-date=June 22, 2011}}</ref> | ||
| During the evening of June 23, the JTWC downgraded Haima to a tropical depression after making landfall in ], |
During the evening of June 23, the JTWC downgraded Haima to a tropical depression after making landfall in ], Guangdong, China but upgraded it to a tropical storm again on June 24,. Early on June 25, Haima became a tropical depression after moving inland in ]. As it made landfall over ], Vietnam, the JTWC and the Hong Kong Observatory downgraded Haima to a low-pressure area.{{citation needed|date=September 2013}} | ||
| {{clear}} | {{clear}} | ||
| ===Severe Tropical Storm Meari (Falcon)=== | ===Severe Tropical Storm Meari (Falcon)=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=June 20 | | Formed = June 20 | ||
| |Dissipated=June 27 | | Dissipated = June 27 | ||
| |Image=Meari 25 |
| Image = Meari Jun 25 2011 0440Z.jpg | ||
| |Track=Meari 2011 track.png | | Track = Meari 2011 track.png | ||
| |10-min winds=60 | | 10-min winds = 60 | ||
| |1-min winds= |
| 1-min winds = 55 | ||
| |Pressure=975 | | Pressure = 975 | ||
| }} | }} | ||
| {{main|Tropical Storm Meari (2011)}} | |||
| Early on June 20, and area of low pressure about 760 km (470 miles), east of the ] began to be monitored by both the JTWC and JMA. That evening, the JTWC issued a Tropical Cyclone Formation Alert. Soon afterwards, PAGASA upgraded the system into a tropical depression, naming it as "Falcon". At the time of the upgrade, Falcon was located about 1000 km (620 miles), east northeast of ]. During the evening of June 21, the JTWC also reported that Falcon had strengthened into a tropical depression. On June 22, both the JTWC and the JMA upgraded Falcon into a tropical storm, and the JMA named it Meari. Meari leaves Philippines with 2 deaths and 5 missing. In the afternoon on June 24, the JMA upgraded Meari to a severe tropical storm as it passed ], ]. | |||
| Early on June 20, an area of low pressure about {{convert|760|km|mi|abbr=on}}, east of the ] began to be monitored by both the JTWC and JMA. That evening, the JTWC issued a Tropical Cyclone Formation Alert. Soon afterwards, PAGASA upgraded the system into a tropical depression, naming it as "Falcon". At the time of the upgrade, Falcon was located about {{convert|1000|km|mi|abbr=on}}, east northeast of ]. During the evening of June 21, the JTWC also reported that Falcon had strengthened into a tropical depression. On June 22, both the JTWC and the JMA upgraded Falcon into a tropical storm, and the JMA named it Meari. Meari left the Philippines with 2 deaths and 5 people missing. On the afternoon on June 24, the JMA upgraded Meari to a severe tropical storm as it passed ], Japan. | |||
| On June 26, Meari rapidly moved to the ] but slowly passed ], |
On June 26, Meari rapidly moved to the ] but slowly passed ], Shandong, China, and then the JMA downgraded Meari to a tropical storm on the same day. On June 27, the JTWC downgraded Meari to a tropical depression before it made landfall on ], and the JMA reported that Meari became a low-pressure area later. | ||
| Heavy rains from the storm's outer bands triggered significant flooding and landslides in South Korea. At least nine people were killed and three others were reported missing across the country.<ref>{{cite web|author=Lee Hyo-sik|publisher=Korea Times|date=June 27, 2011| |
Heavy rains from the storm's outer bands triggered significant flooding and landslides in South Korea. At least nine people were killed and three others were reported missing across the country.<ref>{{cite web|author=Lee Hyo-sik|publisher=Korea Times|date=June 27, 2011|access-date=August 4, 2011|title=Typhoon Meari kills 9, leaves 3 missing |url=https://www.koreatimes.co.kr/www/news/nation/2011/06/117_89661.html}}</ref> In North Korea, heavy rains from the storm caused widespread flooding and damage. At least 160 homes were destroyed and 50,000 hectares of crops submerged. Several reports of confirmed fatalities arose but no details on how many were given to news agencies.<ref>{{cite web|author=Unattributed|work=Straits Times |location=Singapore |date=July 12, 2011|access-date=August 4, 2011|title=Storm leaves casualties, destroys homes in N. Korea |url=http://www.straitstimes.com/BreakingNews/Asia/Story/STIStory_689771.html| archive-url= https://web.archive.org/web/20110720063354/http://www.straitstimes.com/BreakingNews/Asia/Story/STIStory_689771.html| archive-date= July 20, 2011 | url-status= live}}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Tropical Depression Goring=== | ===Tropical Depression Goring=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| | WarningCenter = | |||
| |Formed=July 9 | |||
| | |
| Formed = July 8 | ||
| | Dissipated = July 10 | |||
| |Image=Tropical depression goring 2011-06-10.jpg | |||
| | 10-min winds = 25 | |||
| |Track=Goring 2011 track.png | |||
| | |
| 1-min winds = | ||
| | Image = Goring Jul 9 2011 0450Z.jpg | |||
| |Pressure=1000 | |||
| | Track = Goring 2011 track.png | |||
| | Pressure = 998 | |||
| }} | }} | ||
| Late July |
Late on July 8, an area of low pressure formed about {{convert|300|km|mi|abbr=on}} east of ]. The center was {{convert|460|km|mi|abbr=on}} north of Basco, Batanes.<ref name="Flores">{{cite web|last=Flores|first=Helen|title='Goring' exits; rains to prevail|url=http://www.philstar.com/Article.aspx?articleId=704877|publisher=The Philippine Star|access-date=August 16, 2012|date=July 11, 2011|archive-url=https://archive.today/20130208163318/http://www.philstar.com/Article.aspx?articleId=704877|archive-date=February 8, 2013|url-status=dead}}</ref> On the morning of July 9, JMA upgraded the system to a tropical depression. It was located {{convert|450|km|mi|abbr=on}} northeast of ]. In the afternoon, PAGASA upgraded the low-pressure area into a tropical depression and named it Goring.<ref>{{cite web|title=Tropical depression 'Goring' to bring more rain|url=http://www.abs-cbnnews.com/nation/07/09/11/tropical-depression-goring-bring-more-rain|access-date=July 9, 2011|publisher=Bettina Magsaysay, ABS-CBN}}</ref> After making landfall on Fujian, China, it dissipated on the evening on July 10. However, the JMA classified the system as a tropical depression until the evening of July 10.{{citation needed|date=September 2013}} | ||
| {{clear}} | {{clear}} | ||
| ===Typhoon Ma-on (Ineng)=== | ===Typhoon Ma-on (Ineng)=== | ||
| {{main|Typhoon Ma-on (2011)}} | {{main|Typhoon Ma-on (2011)}} | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=July 11 | | Formed = July 11 | ||
| |Dissipated=July 24 | | Dissipated = July 24 | ||
| |Image=Typhoon Ma-on 2011 |
| Image = Typhoon Ma-on Jul 16 2011 0145Z.jpg | ||
| |Track=Ma-on 2011 track.png | | Track = Ma-on 2011 track.png | ||
| |10-min winds=95 | | 10-min winds = 95 | ||
| |1-min winds=115 | | 1-min winds = 115 | ||
| |Pressure=935 | | Pressure = 935 | ||
| }} | }} | ||
| On July 11, both the JMA and JTWC upgraded |
An area of convection spawned a small area of low pressure on the morning of July 9. It became a tropical disturbance as it passed over the warm waters of the Pacific Ocean. On July 11, both the JMA and JTWC upgraded the tropical disturbance to a tropical depression which was located near ]. On July 12, both the JMA and JTWC upgraded the system to a tropical storm and named it Ma-on. Early on July 13, the JMA upgraded Ma-on to a severe tropical storm and later that day strengthened into a typhoon. After absorbing Tokage, Ma-on reached its peak intensity on July 16. The PAGASA named it Ineng on July 17. | ||
| While Ma-on was affecting Japan, the JTWC downgraded it to a tropical storm in the evening on July 19, before making landfall on ] later in the day. The JMA downgraded Ma-on to a severe tropical storm after it made landfall in ] early on July 20. The JTWC downgraded Ma-on to a tropical depression on July 21, and discontinued advisories the following day. The JMA downgraded Ma-on to a tropical storm early on July 23 and transitioned into an extratropical cyclone east of the ] the next day. | |||
| {{Clear}} | {{Clear}} | ||
| ===Tropical Storm Tokage (Hanna)=== | ===Tropical Storm Tokage (Hanna)=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=July |
| Formed = July 13 | ||
| |Dissipated=July |
| Dissipated = July 15 | ||
| |Image |
| Image = Tokage 2011-07-15.jpg | ||
| |Track=Tokage 2011 track.png | | Track = Tokage 2011 track.png | ||
| |10-min winds=35 | | 10-min winds = 35 | ||
| |1-min winds= |
| 1-min winds = 30 | ||
| |Pressure=1000 | | Pressure = 1000 | ||
| }} | }} | ||
| A low pressure area has formed about 740 km north-northwest of Palau. Early on July 14, the JMA upgraded it into a tropical depression, and the JTWC issued a Tropical Cyclone Formation Alert. On July 15, the JMA upgraded the system to a tropical storm and named it Tokage, and the JTWC upgraded it to a tropical depression later. PAGASA also upgraded it to a tropical depression and named it Hanna. Due to the ], Typhoon Ma-on, the powerful storm just northeast of Tokage, later weakened Tokage to a tropical depression and completely absorbed it early on July 16. | |||
| {{clear}} | |||
| On July 11, the JTWC started to monitor a tropical disturbance that had developed within a poorly organized monsoon trough about {{convert|1000|km|mi|round=5|sp=us}} to the northwest of ]. Over the next couple of days, the disturbance moved towards the west and despite the system being in an area of low vertical wind shear, deep convection surrounding the system struggled to organize around the disturbances low level circulation center. However, by 06:00 UTC on July 13, it had organized enough for the JMA to declare the disturbance a tropical depression. Over the next two days, the system continued to move towards the west and gradually consolidated further. The JMA then named the system as Tokage, as it had developed into a tropical storm and reached its 10-minute peak wind speeds of {{convert|65|km/h|mph|abbr=on|round=5}}. PAGASA then initiated advisories on the system and named it Hanna, before the JTWC designated the system as Tropical Depression 09W and initiated advisories on the system, while it was at its 1-minute peak wind speeds of {{convert|55|km/h|mph|abbr=on|round=5}}. However, by this time Tokage was already interacting with Typhoon Ma-on, with Ma-on's outflow exposing Tokage's low level circulation center, and displacing convection to the west. The JMA, PAGASA and the JTWC then issued their final advisories on the system later that day as the remnants of Tokage was absorbed into Ma-on, due to the ] late on July 15. | |||
| ===Tropical Depression=== | |||
| {{Infobox Hurricane Small | |||
| |Basin=WPac | |||
| |Formed=July 16 | |||
| |Dissipated=July 17 | |||
| |Image=2011 07 16 09UTC JMA Depression 02.jpg | |||
| |Track= | |||
| |Prewinds=< | |||
| |10-min winds=25 | |||
| |Pressure=998 | |||
| }} | |||
| Originally a low pressure area, the JMA reported that a tropical depression formed from it inland in Guangdong, China on July 16. On July 17, the depression dissipated. | |||
| {{clear}} | |||
| ===Tropical Depression=== | |||
| {{Infobox Hurricane Small | |||
| |Basin=WPac | |||
| |Formed=July 16 | |||
| |Dissipated=July 16 | |||
| |Image=2011 07 16 JMA Depression.jpg | |||
| |Track= | |||
| |Prewinds=< | |||
| |10-min winds=25 | |||
| |Pressure=1002 | |||
| }} | |||
| Originally a low pressure area, the JMA reported that a tropical depression formed from it in the ] near Guangdong, China on July 16. However, it quickly dissipated after only six hours. | |||
| {{clear}} | {{clear}} | ||
| ===Severe Tropical Storm Nock-ten (Juaning)=== | ===Severe Tropical Storm Nock-ten (Juaning)=== | ||
| {{main|Tropical Storm Nock-ten (2011)}} | {{main|Tropical Storm Nock-ten (2011)}} | ||
| {{see also|2011 Thailand floods}} | |||
| {{Infobox Hurricane Small | |||
| {{Infobox tropical cyclone small | |||
| |Basin=WPac | |||
| | Basin = WPac | |||
| |Formed=July 24 | |||
| | |
| Formed = July 24 | ||
| | Dissipated = July 31 | |||
| |Image=Nock-ten.A2011207.0230.250m.jpg | |||
| | |
| Image = Nock-ten 2011-07-26 0535Z.jpg | ||
| | Track = Nock-ten 2011 track.png | |||
| |10-min winds=50 | |||
| | |
| 10-min winds = 50 | ||
| | 1-min winds = 65 | |||
| |Pressure=984 | |||
| | Pressure = 985 | |||
| }} | }} | ||
| Early on July 22, an area of low pressure formed to the east of ].<ref>{{cite web|title=NWS Guam — Tropical Weather Advisory 1 for Pre-Tropical storm Nock-ten|url=http:// |
Early on July 22, an area of low pressure formed to the east of ].<ref>{{cite web|title=NWS Guam — Tropical Weather Advisory 1 for Pre-Tropical storm Nock-ten |url=http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |publisher=] |access-date=July 27, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |archive-date=February 16, 2007 }}</ref> The system gradually drifted west over the next few days and late on July 24, the JTWC started monitoring the system as a Tropical Depression.<ref>{{cite web|title=JTWC — Tropical Depression 10W — Warning 001 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=July 27, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Early the next day, the JMA upgraded the area of low pressure into a Tropical Depression.<ref>{{cite web|title=JMA Tropical Cyclone Advisory 250000|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 27, 2011}}</ref> A few hours later, the PAGASA started monitoring the tropical depression and named it 'Juaning'.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number ONE |url=http://dynasmon.fortunecity.com/PAGASA.html |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |access-date=July 27, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20090726132915/http://dynasmon.fortunecity.com/PAGASA.html |archive-date=July 26, 2009 }}</ref> The system continued to drift westwards and strengthened rapidly, that on midnight, that day, the JMA further upgraded the system into a Tropical Storm, naming it Nock-Ten.<ref>{{cite web|title=JMA Tropical Cyclone Advisory – 260000 |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201107260000.htm |publisher=Japan Meteorological Agency |access-date=July 27, 2011 |url-status=dead |archive-url=https://archive.today/20240523002526/https://www.webcitation.org/60SckyNAg?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201107260000.htm |archive-date=May 23, 2024 }}</ref> Early on July 27, the JMA reported that Nock-ten continued to strengthen and upgraded it into a Severe Tropical Storm.<ref>{{cite web|title=JMA Tropical Cyclone Advisory – 270600|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 27, 2011}}</ref> A few hours later, the JTWC reported that Nock-ten rapidly intensified to a category 1 typhoon and made its landfall over northern ] and started weakening.<ref>{{cite web|title=JTWC — Typhoon 10W — Warning 11 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=July 27, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Later the same day, the JMA reported that Nock-ten has exited the ] island at ] maintaining severe tropical storm strength.<ref>{{cite web|title=JMA Tropical Cyclone Advisory – 271200|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 27, 2011}}</ref> However, overnight, the storm rapidly weakened and the JMA downgraded it into a minor tropical storm the next day.<ref>{{cite web|title=JMA Tropical Cyclone Advisory – 280600|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 28, 2011}}</ref> However, on July 29, the storm gradually regained strength and approached south China coast at ], China.<ref>{{cite web|title=JMA — Tropical Storm Advisory 290900 – Tropical Storm Nock-ten|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 29, 2011}}</ref> Later that day, the storm strengthened over land and headed north towards ]'s provincial capital region ].<ref name="Nock-ten Haikou approach">{{cite web|title=JMA Tropical Cyclone Advisory 291200 – Tropical Storm nock-ten|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 29, 2011}}</ref> Over the next day, the storm drifted to the west and made landfall over Northern ].<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 301200 – Tropical Storm Nock-ten |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201107301200.htm |publisher=Japan Meteorological Agency |access-date=July 31, 2011 |url-status=dead |archive-url=https://archive.today/20240523160218/https://www.webcitation.org/60ZNvP291?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201107301200.htm |archive-date=May 23, 2024 }}</ref> The storm weakened rapidly and at midnight that day, the JMA, issuing their final warning on the system, downgraded it into a tropical low.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 310000 – Post-Tropical Storm Nock-ten|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=July 31, 2011}}</ref> | ||
| The provinces of ] and ] were reported to be completely flooded by the rain.<ref>{{cite web|title=Pictures: Storm kills 25 in Philippines|url=http://www.straitstimes.com/BreakingNews/SEAsia/Story/STIStory_695303.html|publisher=Singapore Press Holdings Ltd| |
The provinces of ] and ] were reported to be completely flooded by the rain.<ref>{{cite web|title=Pictures: Storm kills 25 in Philippines|url=http://www.straitstimes.com/BreakingNews/SEAsia/Story/STIStory_695303.html|publisher=Singapore Press Holdings Ltd|access-date=July 27, 2011| archive-url= https://web.archive.org/web/20110727052110/http://www.straitstimes.com/BreakingNews/SEAsia/Story/STIStory_695303.html| archive-date= July 27, 2011 | url-status= live}}</ref> Minor damage to rice crops was reported. Additional heavy rain was expected throughout the day while Nock-ten moved into the South China Sea.<ref>{{cite news|title=Nock-Ten exits Philippines, 25 dead|url=https://af.reuters.com/article/commoditiesNews/idAFL3E7IR26M20110727|archive-url=https://web.archive.org/web/20110816082645/http://af.reuters.com/article/commoditiesNews/idAFL3E7IR26M20110727|url-status=dead|archive-date=2011-08-16|publisher=Thomson Reuters|access-date=July 27, 2011|newspaper=Reuters|date=2011-07-27}}</ref> The number of missing was also pushed up to 31 after 25 crewmembers of a fishing boat were reported missing when their fishing boat was caught in the storm off ].<ref>{{cite web|title=At least 25 dead, 31 missing as Nock-Ten lands in Philippines|url=http://news.xinhuanet.com/english2010/world/2011-07/27/c_131013786.htm|archive-url=https://web.archive.org/web/20120307002516/http://news.xinhuanet.com/english2010/world/2011-07/27/c_131013786.htm|url-status=dead|archive-date=March 7, 2012|agency=Xinhua News Agency|access-date=July 27, 2011}}</ref> Nock-ten suspended all classes in ] from pre-school to college levels on July 26 and 27.<ref>{{cite web|url=http://www.gmanews.tv/story/227543/nation/classes-suspended-in-ncr-other-areas-in-luzon-due-to-juaning |title=Classes suspended in NCR, other areas in Luzon due to 'Juaning' |publisher=GMA News |date=2011-07-27 |access-date=2013-12-20}}</ref> In Northern Luzon, Nock-ten poured down heavy rainfall becoming widespread flooding in the area. The national roads were impassable and landslides were also reported.<ref>{{cite web|url=http://www.gmanews.tv/story/227583/regions/juaning-strands-1600-roads-in-car-c-luzon-impassable |title='Juaning' strands 1,600; roads in CAR, C. Luzon impassable |publisher=GMA News |date=2011-07-27 |access-date=2013-12-20}}</ref> About 26 domestic flights were cancelled from July 26 to 27 due to heavy rains and strong winds.<ref>{{cite web|url=http://www.abs-cbnnews.com/nation/07/26/11/20-domestic-flights-cancelled-due-juaning |title=26 domestic flights cancelled due to 'Juaning' |publisher=ABS-CBN News |date=2011-07-26 |access-date=2013-12-20}}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Typhoon Muifa (Kabayan)=== | ===Typhoon Muifa (Kabayan)=== | ||
| {{main|Typhoon Muifa (2011)}} | {{main|Typhoon Muifa (2011)}} | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=July |
| Formed = July 27 | ||
| |Dissipated=August 9 | | Dissipated = August 9 | ||
| |Image |
| Image = Muifa 2011-07-30 1725Z.jpg | ||
| |Track=Muifa 2011 track.png | | Track = Muifa 2011 track.png | ||
| |10-min winds=95 | | 10-min winds = 95 | ||
| |1-min winds=140 | | 1-min winds = 140 | ||
| |Pressure=930 | | Pressure = 930 | ||
| }} | }} | ||
| Late on July 23, an area of low pressure formed to the southeast of ].<ref>{{cite web|title=NWS Guam — Tropical Cyclone Advisory 231930 for pre-tropical storm Muifa|url=http:// |
Late on July 23, an area of low pressure formed to the southeast of ].<ref>{{cite web|title=NWS Guam — Tropical Cyclone Advisory 231930 for pre-tropical storm Muifa |url=http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |publisher=NOAA |access-date=July 28, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |archive-date=February 16, 2007 }}</ref> the system gradually drifted to the west and on July 25, the JTWC upgraded the low-pressure area to a tropical depression. At that time, it was located approximately {{convert|505|nmi}} to the west of ].<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 001 – Pre-tropical storm Muifa |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |author=Joint Typhoon Warning Center |access-date=July 28, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085744/http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |archive-date=April 30, 2001 }}</ref> At midnight, that day, the JMA started monitoring the system as a tropical depression.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 260000 – Pre-tropical storm Muifa |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107260000.htm |publisher=Japan Meteorological Agency |access-date=July 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523101514/https://www.webcitation.org/60Sd1kaqw?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107260000.htm |archive-date=May 23, 2024 }}</ref> Early on July 28, the JTWC upgraded the system into a Tropical Storm.<ref>{{cite web|title=JTWC — Tropical Storm 11W — Warning 011 |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201107280300.htm |author=Joint Typhoon Warning Center |access-date=July 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523101633/https://www.webcitation.org/60VpPt4EC?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201107280300.htm |archive-date=May 23, 2024 }}</ref> A few hours later, the JMA too upgraded the system to a tropical storm, naming it ''Muifa''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 280600 – Tropical Storm Muifa |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107280600.htm |publisher=Japan Meteorological Agency |access-date=July 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523101554/https://www.webcitation.org/60VpA9ynR?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107280600.htm |archive-date=May 23, 2024 }}</ref> Soon, the storm moved into the Philippine area of responsibility and the PAGASA named it ''Kabayan''.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number ONE — Tropical Storm Kabayan |url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201107280900.htm |publisher=] |access-date=July 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523101714/https://www.webcitation.org/60Vpzd5JJ?url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201107280900.htm |archive-date=May 23, 2024 }}</ref> The storm gradually drifted north over the next day maintaining strength. On the night of July 29, Muifa was upgraded into a severe tropical storm.<ref>{{cite web|title=JMA Tropical Cyclone Advisory 300000 for Severe Tropical Storm Muifa |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107300000.htm |publisher=Japan Meteorological Agency |access-date=July 30, 2011 |url-status=dead |archive-url=https://archive.today/20240523101753/https://www.webcitation.org/60Yr2rA8z?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201107300000.htm |archive-date=May 23, 2024 }}</ref> Overnight, the storm strengthened rapidly and was upgraded into a typhoon the next morning.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 300600 – Typhoon Muifa |url=http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |publisher=Japan Meteorological Agency |access-date=July 30, 2011 |url-status=live |archive-url=https://web.archive.org/web/20081014125540/http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |archive-date=October 14, 2008 }}</ref> The storm strengthened so rapidly, and the JTWC reported that the storm's peak winds were reaching {{convert|140|kn}} <small>(1-min sustained)</small>, as it strengthened into a Category 5 Typhoon. However, the typhoon couldn't maintain Category 5 strength for a long time. According to the JTWC, On July 31, the typhoon interacted with an upper-level trough and weakened into a Category 4 typhoon.<ref>{{cite web|title=JTWC — Super Typhoon Muifa — Warning 24 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |author=Joint Typhoon Warning Center |access-date=July 31, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085744/http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |archive-date=April 30, 2001 }}</ref> The system gradually moved north, then turned west and drifted towards ], before turning northwest again, when it was finally downgraded to a tropical storm by the JTWC.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 51 – Post-Super Typhoon Muifa |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 7, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085744/http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |archive-date=April 30, 2001 }}</ref> Soon afterwards, the JMA too downgraded Muifa to a Severe Tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 070600 – Severe Tropical Storm Muifa |url=http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |publisher=Japan Meteorological Agency |access-date=August 7, 2011 |url-status=live |archive-url=https://web.archive.org/web/20081014125540/http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |archive-date=October 14, 2008 }}</ref> After weakening to a tropical storm, Muifa made landfall at the estuary of the ] on August 8, and the JTWC issued the final warning. Early on August 9, Muifa weakened to a tropical depression over northeast China and became a low-pressure area later. | ||
| Muifa killed 2 men, as their boat was capsized in the vicinity of ], |
Muifa killed 2 men, as their boat was capsized in the vicinity of ] and ] Delta.<ref>{{cite web|title=NDRRMC Update re SitRep No. 2 on Tropical Storm "Kabayan" (Muifa) |url=http://www.ndcc.gov.ph/attachments/article/257/NDRRMC%20Update%20SitRep%20No.%202%20for%20Tropical%20Storm%20KABAYAN%20(Muifa).pdf |publisher=National Disaster Risk Reduction and Management Council |access-date=July 30, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20111007120419/http://www.ndcc.gov.ph/attachments/article/257/NDRRMC%20Update%20SitRep%20No.%202%20for%20Tropical%20Storm%20KABAYAN%20%28Muifa%29.pdf |archive-date=October 7, 2011 }}</ref> Due to the southwest monsoon enhanced by Muifa, it caused heavy rains in several parts of ] including ]. Early on August 2, ] suspended government offices and pre-school to college level in NCR.<ref>{{cite web|url=http://www.gmanews.tv/story/228113/nation/palace-suspends-college-classes-govt-work-in-ncr |title=Palace suspends college classes, govt work in NCR |publisher=GMA News |date=2011-08-02 |access-date=2013-12-20}}</ref> Nearby provinces like ] (Region IV-A) also suspended their classes. In ], 200 residents or 31 families living in communities along the Marikina River sought shelter in evacuation centers.<ref>{{cite web|url=http://www.gmanews.tv/story/228119/nation/marikina-residents-start-to-flee-as-alert-level-2-sounded |title=Marikina residents start to flee as Alert Level 2 sounded |publisher=GMA News |date=2011-08-02 |access-date=2013-12-20}}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Tropical Depression Lando=== | ===Tropical Depression Lando=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| | WarningCenter = | |||
| |Formed=July 31 | |||
| | Image = Lando_Jul_31_2011_0245Z.jpg | |||
| |Dissipated=August 2 | |||
| | Formed = July 31 | |||
| |Image=Lando Jul 31 2011 0245Z.jpg | |||
| | Dissipated = August 2 | |||
| |Track=Lando 2011 track.png | |||
| | Track = Lando 2011 track.png | |||
| |Prewinds= | |||
| | Pressure = 1002 | |||
| |10-min winds=25 | |||
| | 10-min winds = 25 | |||
| |Pressure=1002 | |||
| | 1-min winds = | |||
| }} | }} | ||
| On July 31, the JMA reported that a tropical depression had developed about {{convert|500|km|mi|abbr=on}} to the north west of Manila in the Philippines.<ref>{{cite web|url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |url-status=dead |archive-date=May 2, 2001 |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-07-31 06z |access-date=December 27, 2011 |publisher=Japan Meteorological Agency }}</ref> However, because of the outflow from Typhoon Mufia, the deep convection that surrounded the system was being ] off to the west of the systems low level circulation center.<ref>{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=May 23, 2024 |archive-url=https://archive.today/20240523161503/https://www.webcitation.org/64FXs5vHq?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1107e&L=wx-tropl&D=0&T=0&X=558D791777B97BA4EA&P=36017 |title=Significant Tropical Weather Advisory for the Western and Southern Pacific Ocean 2011-07-31 |access-date=December 27, 2011 |author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |url-status=dead }}</ref> During that day the depression moved towards the north slowly, before PAGASA named it as Lando, however during the next day they reported that the depression had weakened into a low-pressure area and released their final advisory on it.<ref>{{cite web |url=http://www.pagasa.dost.gov.ph/wb/tcarchive_lando_files.html |archive-date=August 5, 2012 |archive-url=https://archive.today/20120805093504/http://www.pagasa.dost.gov.ph/wb/tcarchive_lando_files.html |title=Severe Weather Bulletin number one, Tropical Cyclone Alert: Tropical Depression "Lando" issued at 6.30 pm, 2011-07-31 |access-date=December 27, 2011 |date=July 31, 2011 |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |url-status=dead }}</ref><ref>{{cite web |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |url=http://www.pagasa.dost.gov.ph/wb/tcarchive_lando_files.html |archive-date=August 5, 2012 |archive-url=https://archive.today/20120805093504/http://www.pagasa.dost.gov.ph/wb/tcarchive_lando_files.html |date=July 31, 2011 |access-date=December 27, 2011 |title=Severe Weather Bulletin number four (final), Tropical Cyclone Alert: Tropical Depression "Lando" issued at 5.00 pm, 31 July 2011 |url-status=dead }}</ref> After PAGASA issued their final advisory, the JMA continued to monitor the depression for another 24 hours before late on August 2, the JMA dropped the system from their advisories as it dissipated.<ref>{{cite web|publisher=Japan Meteorological Agency |title=JMA WWJP25 Warning and Summary 2011-07-31 12z |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |date=July 31, 2011 |access-date=December 27, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref><ref>{{cite web|url=https://listserv.illinois.edu/wa.cgi?A2%3Dind1108a%26L%3Dwx-tropl%26T%3D0%26X%3D558D791777B97BA4EA%26P%3D25538 |archive-url=https://archive.today/20240523161420/https://www.webcitation.org/64FcmbyTb?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1108a&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=25538 |url-status=dead |archive-date=May 23, 2024 |title=JMA WWJP25 Warning and Summary 2011-08-02 18z |date=August 2, 2011 |publisher=Japan Meteorological Agency |access-date=December 27, 2011 }}</ref><ref>{{cite web|title=Significant Tropical Weather Advisory for the Western and Southern Pacific Ocean 2011-08-02 21z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |author=Joint Typhoon Warning Center |archive-date=August 5, 2012 |archive-url=https://archive.today/20120805220548/https://listserv.illinois.edu/wa.cgi?A2=ind1108a&L=wx-tropl&D=0&T=0&X=558D791777B97BA4EA&P=27409 |date=August 2, 2011 |publisher=United States Navy, United States Air Force |access-date=December 27, 2011 |url-status=dead }}</ref> | |||
| On July 28, an area of low pressure formed approximately {{convert|85|nmi}} to the West of ].<ref>{{cite web|title=JTWC - Tropical Cyclone Advisory 280600 - Tropical Depression 17|url=http://www.webcitation.org/60Vh0I8v9|publisher=]|accessdate=31 July 2011}}</ref> Over the next few days, the system gradually drifted to the northwest and on July 31, the ] (JMA) upgraded the low into a Tropical Depression to the west of ].<ref>{{cite web|title=JMA - Tropical Cyclone Advisory 310000 - Tropical Depression 17|url=http://www.webcitation.org/60a2nr2yt|publisher=]|accessdate=31 July 2011}}</ref> Later that day, The ] (PAGASA) started monitoring the system as a tropical depression and named it ''Lando''. The system slowly tracked northward. However, on the next day, due to ], Typhoon Muifa the much more powerful system, just to the north-east of Lando, weakened Lando.<ref>{{cite web|title=JTWC tropical Weather Advisory - August 010600|url=http://www.webcitation.org/60bkwn3dr|publisher=]|accessdate=1 August 2011}}</ref> As a result, the PAGASA issued their final warning on the system, downgrading it to a tropical low.<ref>{{cite web|title=Severe Weather Bulletin Number FOUR (FINAL) - Tropical Depression "LANDO"|url=http://www.webcitation.org/60c0j5fA7|publisher=]|accessdate=1 August 2011}}</ref> But despite this, Tropical Depression Lando regenerated soon afterwards, and the JMA reissued their advisories on Lando. Tropical Depression Lando continued to persist for another day, as it slowly tracked eastward, just off the western coast of ]. Then, during the late afternoon of August 2, the JMA stopped tracking Lando, as it had dissipated. Early on August 3, the remmants of Tropical Depression Lando dissipated completely, without ever reaching Luzon. | |||
| {{clear}} | {{clear}} | ||
| ===Severe Tropical Storm Merbok=== | ===Severe Tropical Storm Merbok=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=August |
| Formed = August 2 | ||
| |Dissipated=August 9 | | Dissipated = August 9 | ||
| |Image=Merbok Aug |
| Image = Typhoon Merbok Aug 8 2011.jpg | ||
| |Track=Merbok 2011 track.png | | Track = Merbok 2011 track.png | ||
| |10-min winds= |
| 10-min winds = 50 | ||
| |1-min winds= |
| 1-min winds = 75 | ||
| |Pressure=980 | | Pressure = 980 | ||
| }} | }} | ||
| Early on August |
Early on August 2, the JMA upgraded an area of low pressure near ] to a tropical depression.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 030000 – Tropical depression 18 |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108030000.htm |publisher=Japan Meteorological Agency |access-date=August 3, 2011 |url-status=dead |archive-url=https://archive.today/20240523160014/https://www.webcitation.org/60f2UPgKs?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108030000.htm |archive-date=May 23, 2024 }}</ref> The system intensified rapidly and just six hours later, the JMA upgraded the system to a tropical storm, naming it ''Merbok''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 030600 – Tropical Storm Merbok |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108030600.htm |publisher=Japan Meteorological Agency |access-date=August 3, 2011 |url-status=dead |archive-url=https://archive.today/20240523155940/https://www.webcitation.org/60f2c55BV?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108030600.htm |archive-date=May 23, 2024 }}</ref> Soon, the JTWC started monitoring the system as a tropical depression and upgraded it to a tropical storm later.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 01 – Tropical Depression Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 3, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Merbok began to move westward slowly, but soon afterwards, it turned northwest and gradually drifted in that direction. Late on August 5, the JMA upgraded Merbok into a severe tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 051800 – Severe Tropical Storm Merbok |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108051800.htm |publisher=Japan Meteorological Agency |access-date=August 6, 2011 |url-status=dead |archive-url=https://archive.today/20240523160054/https://www.webcitation.org/60ifx7UgA?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108051800.htm |archive-date=May 23, 2024 }}</ref> Early on August 6, the JTWC upgraded Merbok into a Category 1 typhoon {{convert|960|mi|km|abbr=on}} east-southeast of Tokyo, Japan.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 13 – Typhoon Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 6, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Early the next day, the storm's winds reached a peak of {{convert|90|mph|km/h|abbr=on}} <small>(1-min sustained)</small>.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 16 – Typhoon Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 7, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Later that day, the system was caught in moderate vertical ] and started weakening.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 17 – Typhoon Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 7, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> On August 8, the system started accelerating northwards at a speed of {{convert|23|mph|km/h|abbr=on}} and convection gradually diminished due to colder sea surface temperatures and unfavorable conditions.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 21 – Tropical Storm Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 8, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> As a result, the JMA reported that Merbok had weakened into a tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 081800 – Tropical Storm Merbok |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108081800.htm |publisher=Japan Meteorological Agency |access-date=August 9, 2011 |url-status=dead |archive-url=https://archive.today/20240523160139/https://www.webcitation.org/60o3ULASC?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108081800.htm |archive-date=May 23, 2024 }}</ref> Later on that day, the system started showing extratropical characteristics as the convection near the eye dissipated rapidly. Thus, the JTWC issued their final warning on the system reporting that the system was no longer tropical.<ref>{{cite web|title=JTWC — Final Warning — Extratropical Storm Merbok |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 9, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Later, the JMA, also noting that Merbok had lost its tropical characteristics, issued their final advisory.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 091800 – Extratropical storm merbok|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=August 10, 2011}}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Tropical Depression=== | ===Tropical Depression 13W=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| | WarningCenter = JMA | |||
| |Formed=August 3 | |||
| | Image = TD 13W 8-10-2011.jpg | |||
| |Dissipated=August 4 | |||
| | Formed = August 8 | |||
| |Image=98W Aug 3 2011 0305Z.jpg | |||
| | Dissipated = August 14 | |||
| |Track= | |||
| | Track = 13W 2011 track.png | |||
| |10-min winds=30 | |||
| | Pressure = 1002 | |||
| |1-min winds= | |||
| | 10-min winds = 30 | |||
| |Pressure=1008 | |||
| | 1-min winds = 30 | |||
| }} | }} | ||
| A tropical depression gradually drifted north and early on August 10, the JTWC started monitoring the system as a tropical depression and designated it ''13W''.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 01 – Tropical Depression 13W |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 10, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Initially, the JMA predicted the system to strengthen into a tropical storm, but on August 11, as it moved further north into cool waters and unfavourable conditions, the JMA issued their final advisory.<ref>{{cite web|author=Staff Writer|title=JMA — Tropical Cyclone Advisory 112100 (Final) – Tropical Depression 20|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|work=JMA Tropical Cyclone Advisories|publisher=Japan Meteorological Agency|access-date=August 12, 2011}}</ref> Later, the JTWC too issued their final warning on the system, reporting that it had moved into a subtropical ridge and was expected to dissipate into a remnant low.<ref>{{cite web|author=Joint Typhoon Warning Center |title=JTWC — Tropical Cyclone Adivosry 09 (Final) – Tropical Depression 13W |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |work=JTWC Tropical Cyclone Advisories |access-date=August 12, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> However, the JMA continued to track the remnants as a weak tropical depression over the next few days until the system dissipated on August 15. | |||
| Early on August 3, a tropical depression formed near the ]. The system slowly began to track northwestwards, towards ]. Late on August 4, the system dissipated near the ]. | |||
| {{clear}} | {{clear}} | ||
| === |
===Typhoon Nanmadol (Mina)=== | ||
| {{main|Typhoon Nanmadol (2011)}} | |||
| {{Infobox Hurricane Small | |||
| {{Infobox tropical cyclone small | |||
| |Basin=WPac | |||
| | Basin = WPac | |||
| |Formed=August 8 | |||
| | |
| Formed = August 21 | ||
| | Dissipated = August 31 | |||
| |Image=TD 13W Aug 10 2011.jpg | |||
| | Image = Nanmadol Aug 26 2011 0450Z.jpg | |||
| |Track=13W 2011 track.png | |||
| | Track = Nanmadol 2011 track.png | |||
| |10-min winds=30 | |||
| | |
| 10-min winds = 100 | ||
| | 1-min winds = 140 | |||
| |Pressure=1004 | |||
| | Pressure = 925 | |||
| }} | }} | ||
| Late on August 19, an area of low pressure developed north of ].<ref>{{cite web|title=JTWC Tropical Cyclone Warning 192100 – Tropical Depression 23 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108192100.htm |author=Joint Typhoon Warning Center |access-date=August 22, 2011 |url-status=dead |archive-url=https://archive.today/20240523104540/https://www.webcitation.org/61523IHCv?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108192100.htm |archive-date=May 23, 2024 }}</ref> Early on August 20, the system became better organized and developed a ] (LLCC).<ref>{{cite web|title=Tropical Depression 23 – Low Level Circulation Center |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108200100.htm |author=Joint Typhoon Warning Center |access-date=August 22, 2011 |url-status=dead |archive-url=https://archive.today/20240523104449/https://www.webcitation.org/6151uraG4?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108200100.htm |archive-date=May 23, 2024 }}</ref> The system then turned north and continued to drift north until August 21, when the JMA upgraded the low-pressure area to a tropical depression east of ].<ref name="JMA TDi23 ADV211200">{{cite web|title=JMA — Tropical Cyclone Advisory 211200 – Tropical Depression 23 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 21, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref> The JTWC also issued a ] (TCFA), reporting that the system was becoming better organized.<ref>{{cite web|title=JTWC TCFA 01 on Tropical Depression 23 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 22, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20010430145016/http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |archive-date=April 30, 2001 }}</ref> Later that day, the PAGASA started monitoring the system as a tropical depression and named it ''Mina''.<ref>{{cite web|title=PAGASA -Severe Weather Bulletin Number ONE — Tropical Cyclone Alert: Tropical Depression "MINA" |url=http://dynasmon.fortunecity.com/PAGASA.html |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |access-date=August 22, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20090726132915/http://dynasmon.fortunecity.com/PAGASA.html |archive-date=July 26, 2009 }}</ref> Late on August 22, the system became more well organized prompting the JTWC to initiate advisories on the system, designating it ''14W''.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 01 – Tropical Depression 14W |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201108222100.htm |author=Joint Typhoon Warning Center |access-date=August 23, 2011 |url-status=dead |archive-url=https://archive.today/20240523104612/https://www.webcitation.org/619JaMLGU?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201108222100.htm |archive-date=May 23, 2024 }}</ref> On August 23, the JMA upgraded 14W to a tropical storm, naming it ''Nanmadol''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 231200 – Tropical Storm Nanmadol |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108231200.htm |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 23, 2011 |url-status=dead |archive-url=https://archive.today/20240522172915/https://www.webcitation.org/619j68tUp?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108231200.htm |archive-date=May 22, 2024 }}</ref> Overnight, the system continued to intensify and early on August 24, the JMA upgraded Nanmadol to a severe tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 240600 – Severe Tropical Storm Nanmadol|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|work=JMA Tropical Cyclone Advisories|publisher=Japan Meteorological Agency|access-date=August 24, 2011}}</ref> Later that day, convective banding improved and Nanmadol developed an eye-like feature.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 07 – Tropical Storm Nanmadol |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 24, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> As a result, Nanmadol continued to intensify rapidly and became a typhoon, by midnight.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 250000 – Typhoon Nanmadol |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108250000.htm |publisher=Japan Meteorological Agency |access-date=August 25, 2011 |url-status=dead |archive-url=https://archive.today/20240523104651/https://www.webcitation.org/61CE5dEkt?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108250000.htm |archive-date=May 23, 2024 }}</ref> Nanmadol continued to drift north east and made landfall over ], Philippines with strong winds of over {{convert|110|mph|km/h|abbr=on}}.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 270300 – Typhoon Nanmadol|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|work=JMA Tropical Cyclone Advisories|publisher=Japan Meteorological Agency|access-date=August 27, 2011}}</ref> Nanmadol weakened significantly after interacting with land and early on August 28, the JMA downgraded Nanmadol to a severe tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 280000 – Severe Tropical Storm Nanmadol |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108280000.htm |publisher=Japan Meteorological Agency |access-date=August 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523104931/https://www.webcitation.org/61GjSiPCT?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201108280000.htm |archive-date=May 23, 2024 }}</ref> Late on August 28, Nanmadol made its second landfall over ] in the ] of Taiwan and started weakening.<ref>{{citation |title=JTWC — Tropical Cyclone Advisory 25 – Typhoon Nanmadol|author=Joint Typhoon Warning Center }}</ref> Landfall weakened the system rapidly prompting the JMA to downgrade Nanmadol to a tropical storm with winds of under {{convert|50|mph|km/h|abbr=on}}.<ref>{{citation |title=JMA — Tropical Cyclone Advisory 291200 – Tropical Storm Nanmadol|publisher=Japan Meteorological Agency }}</ref> Soon, it started experiencing strong wind shear and continued weakening. The shear pushed convection approximately {{convert|70|km|mi|abbr=on}} south of the LLCC. The system also accelerated towards China at {{convert|8|kn}} and weakened to a minimal tropical storm.<ref>{{citation |title=JTWC — Tropical Cyclone Advisory 31 – Tropical Storm Nanmadol|author=Joint Typhoon Warning Center }}</ref> After its third landfall over ], Nanmadol weakened rapidly prompting both the JTWC and the JMA to issue their final warnings on the system.<ref>{{citation |title=JMA — Tropical Cyclone Advisory 310600 – TD Downgraded From TS 1111 Nanmadol (1111)|work=JMA Tropical Cyclone Advisories|publisher=Japan Meteorological Agency }}</ref><ref>{{citation |title=Tropical Depression 14W (Nanmadol) Warning No. 34 Final Warning|author=Joint Typhoon Warning Center }}</ref> | |||
| Late on August 8, the JMA upgraded a low pressure area to a tropical depression west of ], and the JTWC issued a TCFA.<ref>{{cite web|title=JMA - High Seas Forecast 081800 - Tropical Depression 20|url=http://www.webcitation.org/60o2QI6Xl|publisher=]|accessdate=9 August 2011}}</ref><ref>{{cite web|title=JTWC - Tropical Cyclone Formation Alert - Tropical Depression 20|url=http://www.webcitation.org/60o2aezpL|publisher=]|accessdate=9 August 2011}}</ref> The system gradually drifted north and early on August 10, the JTWC started monitoring the system as a tropical depression and designated it with ''13W''.<ref>{{cite web|title=JTWC - Tropical Cyclone Warning 01 - Tropical Depression 13W|url=http://www.webcitation.org/60pNrFNxP|publisher=]|accessdate=10 August 2011}}</ref> Initially, the JMA predicted the system to strengthen into a tropical storm, but on August 11, as it moved further north into cool waters and experienced unfavourable conditions, the JMA issued their final advisory.<ref>{{cite web|author=Staff Writer|title=JMA - Tropical Cyclone Advisory 112100 (Final) - Tropical Depression 20|url=http://www.webcitation.org/60sOTXhK6|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=12 August 2011}}</ref> Later, the JTWC too issued their final warning on the system, reporting that it has moved into a subtropical ridge and was expected to dissipate into a remnant low.<ref>{{cite web|author=Staff Writer|title=JTWC - Tropical Cyclone Adivosry 09 (Final) - Tropical Depression 13W|url=http://www.webcitation.org/60sPFbsAC|work=JTWC Tropical Cyclone Advisories|publisher=]|accessdate=12 August 2011}}</ref> However, the JMA continued to track the remants as a weak tropical depression over the next few days until the system dissipated on August 15. | |||
| On August 27, five people died after Nanmadol caused landslides.<ref>{{cite news|title=Typhoon-triggered landslide kills five people in Philippines|url=https://www.theglobeandmail.com/news/world/asia-pacific/typhoon-triggered-landslide-kills-five-children-in-philippines/article2144568/|work=GLOBE AND MAIL|location=Canada|access-date=August 28, 2011}}{{Dead link|date=December 2021 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> At least two Filipino fishermen were reported to be missing after Nanmadol's strong winds whipped up large waves.<ref>{{cite web|title=Two fishermen missing as Philippines braces for Typhoon Nanmadol — Monsters and Critics |url=http://www.monstersandcritics.com/news/asiapacific/news/article_1659254.php/Two-fishermen-missing-as-Philippines-braces-for-Typhoon-Nanmadol |archive-url=https://archive.today/20120604020243/http://www.monstersandcritics.com/news/asiapacific/news/article_1659254.php/Two-fishermen-missing-as-Philippines-braces-for-Typhoon-Nanmadol |url-status=dead |archive-date=June 4, 2012 |publisher=] |access-date=August 26, 2011 }}</ref> In September 2011, the JTWC upgraded Nanmadol to a Category 5 super typhoon in post-analysis. | |||
| {{clear}} | {{clear}} | ||
| ===Tropical |
===Severe Tropical Storm Talas=== | ||
| {{main|Tropical Storm Talas (2011)}} | |||
| {{Infobox Hurricane Small | |||
| {{Infobox tropical cyclone small | |||
| |Basin=WPac | |||
| | Basin = WPac | |||
| |Formed=August 8 | |||
| | |
| Formed = August 23 | ||
| | Dissipated = September 5 | |||
| |Image=JMA TDi 21 - Aug 9 2011.jpg | |||
| | Image = Talas 2011-09-01.jpg | |||
| |Track= | |||
| | Track = Talas 2011 track.png | |||
| |10-min winds=30 | |||
| | |
| 10-min winds = 50 | ||
| | 1-min winds = 55 | |||
| |Pressure=1008 | |||
| | Pressure = 970 | |||
| }} | }} | ||
| Late on August 21, a low-pressure area developed to the west of ], which is associated from the remnants of a tropical depression.<ref>{{cite web|title=JTWC — Tropical Cyclone Outlook 222300 – Tropical Depression 24 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108222300.htm |author=Joint Typhoon Warning Center |access-date=August 23, 2011 |url-status=dead |archive-url=https://www.webcitation.org/619KTqPOj?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108222300.htm |archive-date=August 23, 2011 }}</ref> At midnight that day, the system became sufficiently well organized that the JMA started tracking it as a tropical depression.<ref name="JMA TDi22 ADV230000" /> On August 23, the system moved into an environment of low wind shear and warm sea surface temperatures prompting the JTWC to issue a TCFA on it.<ref>{{cite web|title=JTWC — Tropical Cyclone Formation Alert — Tropical Depression 24 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 24, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20010430145016/http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |archive-date=April 30, 2001 }}</ref> By August 25, the system grew strong enough that the JMA upgraded it to a tropical storm, naming it ''Talas''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 250000 – Tropical Storm Talas |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201108250000.htm |publisher=Japan Meteorological Agency |access-date=August 25, 2011 |url-status=dead |archive-url=https://archive.today/20240523014150/https://www.webcitation.org/61CEsVEBr?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201108250000.htm |archive-date=May 23, 2024 }}</ref> Later that day, the JTWC followed suit and initiated advisories on Talas.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Talas |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 25, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085744/http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |archive-date=April 30, 2001 }}</ref> Talas continued to strengthen and by midnight that day, it became a severe tropical storm.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 260000 – Severe Tropical Storm Talas |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201108260000.htm |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 26, 2011 |url-status=dead |archive-url=https://archive.today/20240523160435/https://www.webcitation.org/61DtxehZX?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201108260000.htm |archive-date=May 23, 2024 }}</ref> Over the next few days, Talas continued to drift north very slowly until late on August 29, when the JMA upgraded Talas to a typhoon.<ref>{{citation |title=JMA — Tropical Cyclone Advisory 291800 – Typhoon Talas|publisher=Japan Meteorological Agency }}</ref> Soon, a subtropical ridge to the west of the storm weakened and the subtropical ridge to the east of the system pushed Talas to the west. As a result, Talas accelerated towards the west maintaining strength and outflow.<ref>{{citation |title=JTWC — Tropical Cyclone Advisory 25 – Tropical Storm Talas|author=Joint Typhoon Warning Center }}</ref> An upper-level cyclone over the system suppressed the convection and kept it from reaching the center. Therefore, Talas remained weak and did not strengthen further. Convection never managed to consolidate the center and convective banding remained well away from the fully exposed low-level circulation center.<ref>{{citation |title=JTWC — Tropical Cyclone Advisory 27 – Tropical Storm Talas|author=Joint Typhoon Warning Center }}</ref> The convective banding continued to expand more and more with the outer ] already brushing parts of Japan. Coastal areas in the nation have already reported gale-force winds several hours before landfall, while the Omega block continued to drive Talas towards the nation.<ref>{{cite web|title=JTWC — Prognostic Reasoning for Tropical Cyclone Advisory 32 – Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jtwc-prognostic-reasoning-for-tropical.html|author=Joint Typhoon Warning Center|access-date=September 2, 2011|date=2011-09-02}}</ref> Land interaction weakened Talas, prompting the JMA to downgrade Talas from a typhoon to a severe tropical storm with winds of under {{convert|60|kn}}.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 020600 – Severe Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-020600.html|publisher=Japan Meteorological Agency|access-date=September 2, 2011|date=2011-09-02}}</ref> Early on September 3, Talas made landfall over ], Japan.<ref>{{cite web|title=台風１２号 高知県に上陸へ |url=http://www3.nhk.or.jp/news/html/20110903/t10015345651000.html |publisher=] |access-date=September 3, 2011 }}{{dead link|date=September 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> After landfall, Talas accelerated north at over {{convert|13|kn}} and its central convection became significantly eroded and was displaced to the north-east as Talas was exposed to a very strong wind shear of over {{convert|50|kn}} that made the LLCC very distorted and difficult to pin-point. Talas was embedded in a ] and the JTWC anticipated an ], which prompted them to issue their final warning on the system.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 40 – Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-40.html|author=Joint Typhoon Warning Center|access-date=September 4, 2011|date=2011-09-04}}</ref> On September 5, the JMA issued their final warning on the system, reporting that Talas has become extratropical on the ].<ref>{{cite web|title=台風１２号が温帯低気圧に |url=http://www3.nhk.or.jp/news/html/20110905/t10015388481000.html |publisher=] |access-date=September 5, 2011 }}{{dead link|date=September 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite web|title=JMA — Tropical Cyclone Advisory 050600 – Ex-Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-050600-ex.html|publisher=Japan Meteorological Agency|access-date=September 5, 2011|date=2011-09-05}}</ref> | |||
| Late on August 8, the JMA upgraded an area of low pressure to a tropical depression, to the northwest of ].<ref name="JMA TDi21 ADV081800">{{cite web|title=JMA - Tropical Cyclone Advisory 081800 - Tropical Depression 21|url=http://www.webcitation.org/60pOm8PIt|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=12 August 2011}}</ref> The system gradually moved to the northeast. On August 10, the system was caught in a moderate vertical wind shear and due to cold sea surface temperature, the system dissipated into a remnant low.<ref name="JMA TDi21 ADV101800">{{cite web|title=JMA - Tropical Cyclone Advisory 101800 - Tropical Depression 21|url=http://www.webcitation.org/60qPiRqF3|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=12 August 2011}}</ref> | |||
| In October 2011, the JMA upgraded Talas as a typhoon in post-analysis. But during 2014, the JMA downgraded Talas again to a severe tropical storm on another post-analysis. | |||
| {{clear}} | {{clear}} | ||
| ===Tropical |
===Tropical Storm Noru=== | ||
| {{Infobox |
{{Infobox tropical cyclone small | ||
| |Basin=WPac | | Basin = WPac | ||
| |Formed= |
| Formed = September 2 | ||
| |Dissipated= |
| Dissipated = September 6 | ||
| |Image |
| Image = Noru 2011-09-04 0310Z.jpg | ||
| | Track = Noru 2011 track.png | |||
| |Track= | |||
| |10-min winds= |
| 10-min winds = 40 | ||
| |1-min winds= | | 1-min winds = 45 | ||
| |Pressure= |
| Pressure = 990 | ||
| }} | }} | ||
| On August 19, a low pressure area developed ] of ].<ref>{{cite web|title=JTWC Tropical Cyclone Warning 190030 - Pre-Tropical Depression 22|url=http://www.webcitation.org/6152C2Adu|publisher=]|accessdate=21 August 2011}}</ref> Early on August 20, the system developed a broad area of low level circulation center and a good ] becoming more well defined.<ref>{{cite web|title=JTWC Tropical Cyclone Warning 200100 - Pre-Tropical Depression 22|url=http://www.webcitation.org/6151uraG4|publisher=]|accessdate=21 August 2011}}</ref> Later that day, the JMA upgraded the system to a tropical depression southeast of the ].<ref name="JMA TDi22 ADV200600">{{cite web|title=JMA - Tropical Cyclone Advisory 200600 - Tropical Depression 22|url=http://www.webcitation.org/614hSpb67|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=2011-08-20}}</ref> On August 22, the system started interacting with an ] and was exposed to a strong vertical wind shear, prompting the JMA to stop monitoring the system as a tropical depression, as the system dissipated to a remnant low.<ref name="JMA TDi22 ADV221200">{{cite web|title=JMA - Tropical Cyclone Advisory 221200 - Tropical Depression 22|url=http://www.webcitation.org/6187FtpJb|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=2011-08-22}}</ref><ref>{{cite web|title=JTWC - Tropical Cyclone Warning 221430 - Tropical Depression 22|url=http://www.webcitation.org/6188G0IIL|publisher=]|accessdate=22 August 2011}}</ref> However, at midnight, the same day, the remnants regenerated, and the JMA started tracking the system as a tropical depression again, until it last appeared near ], ] on August 25, as the system dissipated completely.<ref name="JMA TDi22 ADV230000">{{cite web|title=JMA - Tropical Cyclone Advisory 230000 - Tropical Depression 22, 23, 24|url=http://www.webcitation.org/6191LaXKr|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=2011-08-23}}</ref><ref name="JMA TDi22 ADV250000">{{cite web|title=JMA - Tropical Cyclone Advisory 250000 - Tropical Depression 22|url=http://www.webcitation.org/61CO2qP8l|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=2011-08-25}}</ref> | |||
| During September 1, the JTWC reported that a tropical disturbance had developed within the outflow of Tropical Storm Talas, about {{convert|980|km|mi|abbr=on}} to the northeast of ].<ref name="STWA 09/01">{{cite web|author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force |archive-url=https://archive.today/20240522173434/https://www.webcitation.org/64MMjLJ9e?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1109a&L=wx-tropl&D=0&T=0&X=558D791777B97BA4EA&P=5025 |access-date=March 10, 2012 |title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-09-01 15z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=May 22, 2024 |url-status=dead }}</ref> Deep convection surrounded the systems low-level circulation but it was not organising as it was impacted, by a moderate to strong amount of vertical wind shear, which was produced by Talas' outflow and a ] to the northeast of the system.<ref name="STWA 09/01"/> However, during that day vertical wind shear surrounding the system relaxed and the system started to consolidate, while it moved towards the north-northwest around a subtropical ridge of high pressure.<ref name="STWA 09/02">{{cite web|publisher=United States Navy, United States Air Force |archive-url=https://archive.today/20240523161541/https://www.webcitation.org/64MNQkz1y?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1109a&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=12797 |author=Joint Typhoon Warning Center |access-date=March 10, 2012 |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=May 23, 2024 |title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-09-02 06z |url-status=dead }}</ref> Early the next day, because the system continued to consolidate the JTWC issued a Tropical Cyclone Formation Alert, while the JMA reported that the system had become a tropical depression.<ref name="TCFA 09/02">{{cite web|url=https://listserv.illinois.edu/wa.cgi?A2%3Dind1109a%26L%3Dwx-tropl%26T%3D0%26X%3D558D791777B97BA4EA%26P%3D15405 |archive-url=https://archive.today/20240522173514/https://www.webcitation.org/64MNgaX8Y?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1109a&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=15405 |url-status=dead |archive-date=May 22, 2024 |title=Tropical Cyclone Formation Alert 2011-09-02 10z |date=September 2, 2011 |author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force, United States Air Force |access-date=January 1, 2012 }}</ref><ref name="JMA BT: Noru">{{cite web|author=RSMC Tokyo — Typhoon Center |url=http://weather.noaa.gov/pub/data/raw/ax/axpq20.rjtd..txt |title=Tropical Cyclone Best Track Analysis: Tropical Storm Noru 2011 |date=October 26, 2011 |publisher=Japan Meteorological Agency |access-date=January 1, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20071024084420/http://weather.noaa.gov/pub/data/raw/ax/axpq20.rjtd..txt |archive-date=October 24, 2007 }}</ref> Over the next 24 hours, the system continued to consolidate as it moved towards the north-northwest before the JTWC initiated advisories on the system as it intensified into Tropical Storm 16W, however the JMA did not name it as Noru until 0600 UTC on September 4,. As it was named, the JTWC reported that Noru had peaked with 1-minute windspeeds of {{convert|85|km/h|mph|abbr=on|round=5}}, while the JMA reported peak 10-minute sustained wind speeds of {{convert|75|km/h|mph|abbr=on|round=5}}.<ref name="JMA BT: Noru"/> On September 5, after it had peaked in intensity, a fresh Tutt cell developed over the system and started to inhibit outflow and shear the convection away, which meant as a result that the system started to weaken. Over the next two days, Noru went through an extratropical transition before becoming an extratropical cyclone on September 6, about {{convert|1150|km|mi|abbr=on}} to the northeast of Tokyo, Japan.<ref name="JMA BT: Noru"/> As an extratropical cyclone, Noru continued its movement towards the north-northwest and affected ] and the ], before it moved over ] on September 9, and dissipated.<ref name="JMA BT: Noru"/> | |||
| {{clear}} | {{clear}} | ||
| === |
===Tropical Storm Kulap (Nonoy)=== | ||
| {{Infobox tropical cyclone small | |||
| {{main|Typhoon Nanmadol (2011)}} | |||
| | Basin = WPac | |||
| {{Infobox Hurricane Small | |||
| | Formed = September 6 | |||
| |Basin=WPac | |||
| | Dissipated = September 11 | |||
| |Formed=August 21 | |||
| | Image = Kulap 2011-09-07 0210Z.jpg | |||
| |Dissipated=August 31 | |||
| | Track = Kulap 2011 track.png | |||
| |Image=Nanmadol Aug 26 2011.jpg | |||
| | 10-min winds = 35 | |||
| |Track=Nanmadol 2011 track.png | |||
| | |
| 1-min winds = 40 | ||
| | Pressure = 1000 | |||
| |1-min winds=135 | |||
| |Pressure=920 | |||
| }} | }} | ||
| Late on |
Late on September 4, an area of low pressure developed to the southeast of ], Japan.<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 042200 – Tropical Depression 26|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-warning-042200.html|author=Joint Typhoon Warning Center|access-date=September 6, 2011|date=2011-09-06}}</ref> Over the next two days, the system drifted north and developed a well defined LLCC with organized convective banding, prompting the JMA to upgrade the low-pressure area to a tropical depression.<ref>{{cite web|title=JMA — Tropical Cyclone Warning 060600 – Tropical Depression 26|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-warning-060600.html|publisher=Japan Meteorological Agency|access-date=September 6, 2011|date=2011-09-06}}</ref> On September 7, convection consolidated the low-level circulation center very well with tightly curved banding wrapped into it. Also, high sea-surface temperatures and very low wind shear caused the system to undergo ],<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-01_07.html|author=Joint Typhoon Warning Center|access-date=September 7, 2011|date=2011-09-07}}</ref> prior to which, the JMA upgraded the system to a tropical storm and named it ''Kulap''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 70300 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-70300.html|publisher=Japan Meteorological Agency|access-date=September 7, 2011|date=2011-09-07}}</ref> However, the system stopped strengthening soon after as the LLCC became partially exposed and the convection was displaced to the south. Kulap remained small in size and dry air entering from the western periphery kept it from strengthening further.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 03 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-03_08.html|author=Joint Typhoon Warning Center|access-date=September 8, 2011|date=2011-09-08}}</ref> Wind shear increased, pushing convection approximately {{convert|180|nmi}} south of the LLCC. Also, Kulap was located beneath a ] (TUTT cell) that caused subsidence. A mid-level subtropical steering ridge caused Kulap to track in a northwestward direction.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 05 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-05.html|author=Joint Typhoon Warning Center|access-date=September 8, 2011|date=2011-09-08}}</ref> On September 8, Kulap moved into the east-northeast periphery of the Philippine Area of Responsibility (PAR) prompting the PAGASA to start issuing advisories on the system, naming it ''Nonoy''.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number ONE — Tropical Storm "NONOY" (KULAP)|url=http://vizagbom.blogspot.com/2011/09/pagasa-severe-weather-bulletin-number.html|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|access-date=September 8, 2011|date=2011-09-08}}</ref> However, Kulap quickly accelerated north and exited the PAR on the same evening, prompting the PAGASA to issued their final advisory on the system.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number TWO (FINAL) – Tropical Storm "NONOY" (KULAP)|url=http://vizagbom.blogspot.com/2011/09/pagasa-severe-weather-bulletin-number_08.html|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|access-date=September 8, 2011|date=2011-09-08}}</ref> After increasing wind shear caused further weakening, the JTWC downgraded Kulap to a tropical depression late on September 8,.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 07 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-07_09.html|author=Joint Typhoon Warning Center|access-date=September 9, 2011|date=2011-09-09}}</ref> Early on September 10, the JMA too downgraded Kulap to a tropical depression,<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 100000 – Tropical Storm Kulap|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-100000.html|publisher=Japan Meteorological Agency|access-date=September 10, 2011|date=2011-09-10}}</ref> and continued to track Kulap's remnants as a tropical depression until it was finally absorbed by the weather front early on September 11. | ||
| {{clear}} | |||
| ===Typhoon Roke (Onyok)=== | |||
| On August 27, five people died after Nanmadol caused landslides.<ref>{{cite web|title=Typhoon-triggered landslide kills five people in Philippenes|url=http://www.theglobeandmail.com/news/world/asia-pacific/typhoon-triggered-landslide-kills-five-children-in-philippines/article2144568/|publisher=THE GLOBE AND MAIL|accessdate=August 28, 2011}}</ref> At least two Filipino fishermen were reported to be missing after Nanmadol's strong winds whipped up large waves.<ref>{{cite web|title=Two fishermen missing as Philippines braces for Typhoon Nanmadol - Monsters and Critics|url=http://www.monstersandcritics.com/news/asiapacific/news/article_1659254.php/Two-fishermen-missing-as-Philippines-braces-for-Typhoon-Nanmadol|publisher=]|accessdate=26 August, 2011}}</ref> | |||
| {{main|Typhoon Roke (2011)}} | |||
| {{Infobox tropical cyclone small | |||
| | Basin = WPac | |||
| | Formed = September 9 | |||
| | Dissipated = September 22 | |||
| | Image = 2011 Roke.jpg | |||
| | Track = Roke 2011 track.png | |||
| | 10-min winds = 85 | |||
| | 1-min winds = 115 | |||
| | Pressure = 940 | |||
| }} | |||
| Early on September 8, a cluster of ]s came together as a low-pressure area with improving outflow and a developing low-level circulation center (LLCC).<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 080130 – Tropical Depression|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-warning-080130.html|author=Joint Typhoon Warning Center|access-date=September 9, 2011|date=2011-09-09}}</ref> Later that day, the JMA upgraded the low-pressure area to a tropical depression north-northeast of the ].<ref>{{cite web|title=JMA — Tropical Cyclone Warning 081800 – Tropical Depression 27|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-warning-081800.html|publisher=Japan Meteorological Agency|access-date=September 9, 2011|date=2011-09-09}}</ref> Over the next two days, the system gradually drifted west and intensified slightly, prompting the JTWC to issue a Tropical Cyclone Formation Alert (TCFA) on it.<ref>{{cite web|title=JTWC — Tropical Cyclone Formation Alert — Tropical Depression 27|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-formation-alert_11.html|author=Joint Typhoon Warning Center|access-date=September 11, 2011|date=2011-09-11}}</ref> Convection gradually consolidated the LLCC and the JTWC initiated advisories on the system on September 11, designating it with ''18W''.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 01 – Tropical Depression 18W|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-01_11.html|author=Joint Typhoon Warning Center|access-date=September 11, 2011|date=2011-09-11}}</ref> The next day, the depression drifted into the Philippine Area of Responsibility (PAR) and the PAGASA initiated advisories on the depression, naming it ''Onyok''.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number ONE — Tropical Depression "ONYOK" |url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109121200.htm |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |access-date=September 13, 2011 |url-status=dead |archive-url=https://archive.today/20240523124704/https://www.webcitation.org/61fF7WWL3?url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109121200.htm |archive-date=May 23, 2024 }}</ref> However, just as similar to Kulap, Onyok also exited the PAR in 6 hours from entering the region.<ref>{{cite web|title=PAGASA — Severe Weather Bulletin Number TWO(FINAL) – Tropical Depression "ONYOK" |url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109130300.htm |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |access-date=September 13, 2011 |url-status=dead |archive-url=https://archive.today/20240523124741/https://www.webcitation.org/61fFXGTRR?url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109130300.htm |archive-date=May 23, 2024 }}</ref> In an advisory, the JTWC reported that there were at least two more ] associated with the system, that caused an abrupt, erratic movement.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 08 – Tropical Storm Roke |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=September 13, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> However, being located in an area of warm sea surface temperatures and low vertical wind shear, the depression continued to strengthen and on September 13, the JMA upgraded the depression to a tropical storm and named it ''Roke''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 131200 – Tropical Storm Roke |url=http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |publisher=Japan Meteorological Agency |access-date=September 13, 2011 |url-status=live |archive-url=https://web.archive.org/web/20081014125540/http://weather.noaa.gov/pub/data/raw/wt/wtpq21.rjtd..txt |archive-date=October 14, 2008 }}</ref> On September 17, Roke developed a small, deep convective eye promoting the JMA to upgrade Roke to a severe tropical storm with winds of over {{convert|50|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 26 – Tropical Storm Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109172100.htm |author=Joint Typhoon Warning Center |access-date=September 18, 2011 |url-status=dead |archive-url=https://archive.today/20240523125103/https://www.webcitation.org/61mnwjXHz?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109172100.htm |archive-date=May 23, 2024 }}</ref> Between September 19 and 20, Roke underwent ''Explosive intensification'', a more extreme case of rapid deepening that involves a tropical cyclone deepening at a rate of at least 2.5 ] per hour for a minimum of 12 hours. Also, they added that Roke developed a {{convert|10|nmi}} eye and a good poleward ] channel.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 34 – Typhoon Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109192100.htm |author=Joint Typhoon Warning Center |access-date=September 20, 2011 |url-status=dead |archive-url=https://archive.today/20240523125427/https://www.webcitation.org/61pr6Jnws?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109192100.htm |archive-date=May 23, 2024 }}</ref> On September 21, Typhoon Roke made landfall over ], Japan at about 5:00 UTC (14:00 ]).<ref>{{cite web|title=台風 浜松市付近に上陸し東進 |url=http://www3.nhk.or.jp/news/html/20110921/t10015741001000.html |publisher=NHK |access-date=September 21, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110923215204/http://www3.nhk.or.jp/news/html/20110921/t10015741001000.html |archive-date=September 23, 2011 }}</ref> Soon Roke started weakening as cloud tops started getting warmed up and eye diameter started to decrease. However, the system still maintained a near radial outflow and the convective structure continued to remain organized that kept Roke from dissipating rapidly.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 36 – Typhoon Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109200900.htm |author=Joint Typhoon Warning Center |access-date=September 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523125522/https://www.webcitation.org/61rG722t4?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109200900.htm |archive-date=May 23, 2024 }}</ref> Although Roke entered a de-intensification phase, it still had plenty of strength that posed a great threat to regions of Japan. Being located approximately {{convert|330|nmi}} southwest of ], the typhoon accelerated north-northwestward at approximately {{convert|16|kn}} with winds of over {{convert|100|kn}} (1-min sustained) being a Category 3 typhoon on the SSHS.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 38 – Typhoon Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109202100.htm |author=Joint Typhoon Warning Center |access-date=September 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523125555/https://www.webcitation.org/61rGNc28H?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109202100.htm |archive-date=May 23, 2024 }}</ref> Being embedded in the baroclinic zone, Roke started its ]. Also, land interaction severely weakened the storm to a minimal Category 1 typhoon with winds of under {{convert|70|kn}} (1-min sustained).<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 40 – Typhoon Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109210900.htm |author=Joint Typhoon Warning Center |access-date=September 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523125631/https://www.webcitation.org/61rqwpqZc?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109210900.htm |archive-date=May 23, 2024 }}</ref> Only six hours later, the storm further weakened and accelerated northeastward at approximately {{convert|31|kn}} with rapidly dissipating deep convection completely sheared to the northeast of the LLCC. As a result, the JTWC ceased advisories on the storm, as it became fully extratropical.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 41 – Tropical Storm Roke |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109211500.htm |author=Joint Typhoon Warning Center |access-date=September 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523125708/https://www.webcitation.org/61rr7FsZT?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109211500.htm |archive-date=May 23, 2024 }}</ref> | |||
| {{clear}} | {{clear}} | ||
| ===Typhoon |
===Typhoon Sonca=== | ||
| {{Infobox tropical cyclone small | |||
| {{main|Typhoon Talas (2011)}} | |||
| | Basin = WPac | |||
| {{Infobox Hurricane Small | |||
| | Formed = September 14 | |||
| |Basin=WPac | |||
| | Dissipated = September 20 | |||
| |Formed=August 23 | |||
| | Image = Sonca Sept 19 2011.jpg | |||
| |Dissipated=September 5 | |||
| | Track = Sonca 2011 track.png | |||
| |Image=Typhoon Talas Sep 1 2011.jpg | |||
| | 10-min winds = 70 | |||
| |Track=Talas 2011 track.png | |||
| | |
| 1-min winds = 90 | ||
| | Pressure = 970 | |||
| |1-min winds=55 | |||
| |Pressure=965 | |||
| }} | }} | ||
| Early on September 13, a low-pressure area formed northeast of the ].<ref>{{cite web|title=JTWC — Tropical Cyclone Warning 130000 – Tropical Depression 28 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201109130000.htm |author=Joint Typhoon Warning Center |access-date=September 14, 2011 |url-status=dead |archive-url=https://archive.today/20240523160455/https://www.webcitation.org/61gVldD1Y?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201109130000.htm |archive-date=May 23, 2024 }}</ref> The system gradually drifted north and steadily intensified until the next day when the JMA upgraded the system to a tropical depression.<ref name="tdi 28 and 29 form">{{cite web|title=JMA — Tropical Cyclone Warning 140000 – Tropical Depressions 28 & 29 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency |access-date=September 14, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref> Later on September 14, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on the system reporting that the system could intensify into a tropical storm within 24 hours from then.<ref>{{cite web|title=JTWC — Tropical Cyclone Formation Alert — Tropical Depression 28 |url=http://gwydir.demon.co.uk/advisories/WTPN22-PGTW_201109141430.htm |author=Joint Typhoon Warning Center |access-date=September 15, 2011 |url-status=dead |archive-url=https://archive.today/20240523160538/https://www.webcitation.org/61i2gLbLj?url=http://gwydir.demon.co.uk/advisories/WTPN22-PGTW_201109141430.htm |archive-date=May 23, 2024 }}</ref> Convection rapidly consolidated the center with persistent, deep convection around the north-eastern periphery, prompting the JTWC to initiate advisories on the system, designating it with ''19W''.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 01 – Tropical Depression 19W |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109142100.htm |author=Joint Typhoon Warning Center |access-date=September 15, 2011 |url-status=dead |archive-url=https://archive.today/20240523160707/https://www.webcitation.org/61iWxzI3K?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109142100.htm |archive-date=May 23, 2024 }}</ref> Soon, the JMA also initiated advisories on the system, upgrading it to Tropical Storm ''Sonca''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 150600 – Tropical Storm Sonca|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=September 15, 2011}}</ref> In the begging, Sonca seemed to have intensified rapidly since formation, however, soon the storm weakened back to a minimal tropical storm because of dry air entering the LLCC that caused it to elongate and weaken.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 04 – Tropical Storm Sonca |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/wp1911prog.txt |author=Joint Typhoon Warning Center |access-date=September 15, 2011 |url-status=dead |archive-url=https://archive.today/20240523160617/https://www.webcitation.org/61ijYtomE?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/wp1911prog.txt |archive-date=May 23, 2024 }}</ref> However, that was not for too long as vigorous convection persisted over the well defined LLCC with tightly curved banding wrapped in, Sonca continued to strengthen gradually and the JTWC reported winds of at least {{convert|50|kn}} near the center.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 08 – Tropical Storm Sonca |url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201109161500.htm |author=Joint Typhoon Warning Center |access-date=September 17, 2011 |url-status=dead |archive-url=https://archive.today/20240523160738/https://www.webcitation.org/61l4rFxTs?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201109161500.htm |archive-date=May 23, 2024 }}</ref> As Sonca continued to strengthen, and the JMA upgraded it to a severe tropical storm on September 17,.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 170600 – Tropical Storm Sonca |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109170600.htm |publisher=Japan Meteorological Agency |access-date=September 17, 2011 |url-status=dead |archive-url=https://archive.today/20240523160824/https://www.webcitation.org/61lRtzQv5?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109170600.htm |archive-date=May 23, 2024 }}</ref> Later that day, Sonca developed a large {{convert|10|nmi}} ragged eye with deep convective banding tightly wrapped into it.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 12 – Typhoon Sonca |url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201109171500.htm |author=Joint Typhoon Warning Center |access-date=September 18, 2011 |url-status=dead |archive-url=https://archive.today/20240523160903/https://www.webcitation.org/61mnOnpby?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201109171500.htm |archive-date=May 23, 2024 }}</ref> As a result, Sonca strengthened more rapidly and by early the next day, it became a typhoon.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 180600 – Typhoon Sonca |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109180600.htm |publisher=Japan Meteorological Agency |access-date=September 18, 2011 |url-status=dead |archive-url=https://archive.today/20240523160940/https://www.webcitation.org/61mnUC15N?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109180600.htm |archive-date=May 23, 2024 }}</ref> On September 19, Sonca reached a peak intensity of {{convert|85|kn}} (1-min mean) and {{convert|70|kn}} (10-min mean) and soon the convection around the northern periphery started weakening.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 17 – Typhoon Sonca |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109182100.htm |author=Joint Typhoon Warning Center |access-date=September 19, 2011 |url-status=dead |archive-url=https://archive.today/20240523161032/https://www.webcitation.org/61oHENEpH?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109182100.htm |archive-date=May 23, 2024 }}</ref> Being embedded in a baroclinic zone with low sea surface temperatures, Sonca started its extratropical transition late on September 19. | |||
| Late on August 22, an area of low pressure developed to the west of ].<ref>{{cite web|title=JTWC - Tropical Cyclone Outlook 222300 - Tropical Depression 24|url=http://www.webcitation.org/619KTqPOj|publisher=]|accessdate=23 August 2011}}</ref> At midnight that day, the system became sufficiently well organized that the JMA started tracking it as a tropical depression.<ref name="JMA TDi22 ADV230000"></ref> On August 23, the system moved into an environment of low wind shear and warm sea surface temperatures prompting the JTWC to issued a TCFA on it.<ref>{{cite web|title=JTWC - Tropical Cyclone Formation Alert - Tropical Depression 24|url=http://www.webcitation.org/61ApwbsPN|publisher=]|accessdate=24 August 2011}}</ref> By August 25, the system grew strong enough that the JMA upgraded it to a tropical storm, naming it ''Talas''.<ref>{{cite web|title=JMA - Tropical Cyclone Advisory 250000 - Tropical Storm Talas|url=http://www.webcitation.org/61CEsVEBr|publisher=]|accessdate=25 August 2011}}</ref> Later that day, the JTWC followed suit and initiated advisories on Talas.<ref>{{cite web|title=JTWC - Tropical Cyclone Advisory 01 - Tropical Storm Talas|url=http://www.webcitation.org/61CN71ytV|publisher=]|accessdate=25 August 2011}}</ref> Talas continued to strengthen and by midnight that day, it became a severe tropical storm.<ref>{{cite web|title=JMA - Tropical Cyclone Advisory 260000 - Severe Tropical Storm Talas|url=http://www.webcitation.org/61DtxehZX|work=JMA Tropical Cyclone Advisories|publisher=]|accessdate=26 August 2011}}</ref> | |||
| <ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 19 – Typhoon Sonca|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-19.html|author=Joint Typhoon Warning Center|access-date=September 20, 2011|date=2011-09-20}}</ref> The transition took place relatively fast because of a frontal boundary and the JTWC reported that Sonca became extratropical early on September 20,<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 22 – Typhoon Sonca|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-22.html|author=Joint Typhoon Warning Center|access-date=September 20, 2011|date=2011-09-20}}</ref> while the JMA did the same later in the evening.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 201200 – Typhoon Sonca|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-201200.html|publisher=Japan Meteorological Agency|access-date=September 20, 2011|date=2011-09-20}}</ref> | |||
| {{clear}} | |||
| ===Typhoon Nesat (Pedring)=== | |||
| {{main|Typhoon Nesat (2011)}} | |||
| {{Infobox tropical cyclone small | |||
| | Basin = WPac | |||
| | Formed = September 23 | |||
| | Dissipated = September 30 | |||
| | Image = Nesat 2011-09-26 1758Z.jpg | |||
| | Track = Nesat 2011 track.png | |||
| | 10-min winds = 80 | |||
| | 1-min winds = 115 | |||
| | Pressure = 950 | |||
| }} | |||
| On September 23, both the JMA and the JTWC reported that Tropical Depression 20W, had developed about {{convert|610|km|mi|abbr=on|round=5}} to the southwest of Hagåtña, Guam.<!--<ref>{{cite web|title=JTWC – Tropical Cyclone Advisory 01 – Tropical Storm Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109142100.htm |author=Joint Typhoon Warning Center |access-date=March 26, 2012 |url-status=live |archive-url=https://archive.today/20240523160707/https://www.webcitation.org/61iWxzI3K?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109142100.htm |archive-date=May 23, 2024 }}</ref> --><ref name="typ"/> Early on September 24, the JMA further upgraded 20W to a tropical storm and named it ''Nesat''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 240000 – Tropical Storm Nesat |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109240000.htm |publisher=Japan Meteorological Agency |access-date=September 24, 2011 |url-status=dead |archive-url=https://archive.today/20240523112628/https://www.webcitation.org/61vrxn9Lm?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109240000.htm |archive-date=May 23, 2024 }}</ref> Nesat continued to drift west with expanding deep convection around the entire system and consolidating convection around the LLCC. The mid-level warm anomaly near the system continued to intensify and convective banding near the LLCC became more and more tighter.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 06 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109242100.htm |author=Joint Typhoon Warning Center |access-date=September 26, 2011 |url-status=dead |archive-url=https://archive.today/20240523112706/https://www.webcitation.org/61xQKsqhC?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109242100.htm |archive-date=May 23, 2024 }}</ref> As a result, the JMA upgraded Nesat to a severe tropical storm on September 25,.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 250000 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109250000.htm |publisher=Japan Meteorological Agency |access-date=September 26, 2011 |url-status=dead |archive-url=https://archive.today/20240522172956/https://www.webcitation.org/61xQ63zeQ?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109250000.htm |archive-date=May 22, 2024 }}</ref> Late on the same day, the JMA further upgraded Nesat to a typhoon.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 252100 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109252100.htm |publisher=Japan Meteorological Agency |access-date=September 26, 2011 |url-status=dead |archive-url=https://archive.today/20240523112747/https://www.webcitation.org/61yxveXJz?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201109252100.htm |archive-date=May 23, 2024 }}</ref> The system rapidly deepened and quickly developed a {{convert|30|nmi}} ragged eye and ] ] aloft generating an exceptionally excellent all-around outflow. Also, the system had a highly ] radial ]. The JTWC originally anticipated Nesat to become a category 4 typhoon on the SSHS with winds exceeding {{convert|130|kn}} (1-min sustained). However, because of a cold anomaly, the system only reached a maximum 1-min sustained wind speed of {{convert|115|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 14 – Typhoon Nesat |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=September 27, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> | |||
| Early on September 27, Nesat made landfall over the Luzon region of Philippines. As a result, the ] got eroded and the maximum 1-min sustained winds dropped to {{convert|95|kn}}. The system approached land at nearly {{convert|10|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 15 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109270300.htm |author=Joint Typhoon Warning Center |access-date=September 28, 2011 |url-status=dead |archive-url=https://archive.today/20240522173109/https://www.webcitation.org/620QI2S3U?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109270300.htm |archive-date=May 22, 2024 }}</ref> However, later on that day, the LLCC started to get re-consolidated with convection as Nesat quickly moved west and re-emerged over water. At that time, it was located near the southern periphery of a deep layered ] and moved towards the southwest and the winds further dropped to {{convert|85|kn}} because of land interaction.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 16 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109270900.htm |author=Joint Typhoon Warning Center |access-date=September 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523113029/https://www.webcitation.org/621ycUxkz?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109270900.htm |archive-date=May 23, 2024 }}</ref> Though the system has maintained overall central deep convection, ] persisted along the northwest quadrant which caused further drop in wind speed. Upper level analysis indicated that Nesat was to the south of a ridge axis in an area of moderate vertical ].<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 18 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109272100.htm |author=Joint Typhoon Warning Center |access-date=September 28, 2011 |url-status=dead |archive-url=https://archive.today/20240523112951/https://www.webcitation.org/621ycIOZg?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109272100.htm |archive-date=May 23, 2024 }}</ref> The system continued to weaken with convective banding loosely wrapped into the partially exposed LLCC. The winds continued to drop and eventually reached {{convert|65|kn}} (1-min sustained) which made it a minimal typhoon on the SSHS. Though the weakening, Water vapour imagery showed that the typhoon was still maintaining excellent outflow towards the equator and improving outflow towards the pole.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory — Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109280900.htm |author=Joint Typhoon Warning Center |access-date=September 30, 2011 |url-status=dead |archive-url=https://archive.today/20240523113149/https://www.webcitation.org/623Tp1kIp?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109280900.htm |archive-date=May 23, 2024 }}</ref> Nesat maintained a relatively large area of gale-force winds. Animated infrared satellite imagery depicted that the storm was expanding in size and convective banding continued to move further and further away from the LLCC. The LLCC was also relatively large, elongated and cloud free.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 22 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109282100.htm |author=Joint Typhoon Warning Center |access-date=September 30, 2011 |url-status=dead |archive-url=https://archive.today/20240523113109/https://www.webcitation.org/623Tou1vP?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109282100.htm |archive-date=May 23, 2024 }}</ref> | |||
| On September 29, by the time Nesat managed to re-develop ad {{convert|10|nmi}} ragged eye, it made landfall over ] in Hainan, China and started weakening again. Because of the poor shapre and disorganization at the LLCC, the typhoon could only maintain a maximum 1-min sustained windspeed of {{convert|65|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 24 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109290900.htm |author=Joint Typhoon Warning Center |access-date=October 1, 2011 |url-status=dead |archive-url=https://archive.today/20240523113351/https://www.webcitation.org/625GoDh2q?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109290900.htm |archive-date=May 23, 2024 }}</ref> Even after the landfall, Nesat maintained vigorous convection all around the LLCC and did not weaken too much when compared to the reactions after the Philippine ]. There was a sea-surface temperature of approximately {{convert|28|C}} and a slight vertical wind shear of {{convert|10|kn}} near the system's center at that time. The JTWC anticipated the storm to gradually drift over the ] and make landfall over Vietnam with a 1-min sustained wind speed of at-least {{convert|50|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 26 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109292100.htm |author=Joint Typhoon Warning Center |access-date=October 1, 2011 |url-status=dead |archive-url=https://archive.today/20240523113310/https://www.webcitation.org/625GnvuBG?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109292100.htm |archive-date=May 23, 2024 }}</ref> Early on September 30, Nesat made its final landfall over northern Vietnam with a 1-mim sustained windspeed of {{convert|55|kn}} and a well-defined, tightly wrapped LLCC, and soon it started weakening. Due to land interaction, the convection around the system started decaying rapidly.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 28 – Typhoon Nesat |url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109300900.htm |author=Joint Typhoon Warning Center |access-date=October 1, 2011 |url-status=dead |archive-url=https://archive.today/20240523113231/https://www.webcitation.org/625GnnRmQ?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201109300900.htm |archive-date=May 23, 2024 }}</ref> Due to the rapid weakening, the JTWC ceased advisories on the storm, soon afterwards.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 29 – Typhoon Nesat |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |author=Joint Typhoon Warning Center |access-date=October 1, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085217/http://weather.noaa.gov/pub/data/raw/wt/wtpn31.pgtw..txt |archive-date=April 30, 2001 }}</ref> Later that evening, the JMA downgraded Nesat to a tropical low over land and issued their final warning on the system.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 301800 – Typhoon Nesat|url=http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|archive-url=https://web.archive.org/web/20080517150219/http://weather.noaa.gov/pub/data/raw/wt/wtpq20.rjtd..txt|url-status=dead|archive-date=May 17, 2008|publisher=Japan Meteorological Agency|access-date=October 1, 2011}}</ref> | |||
| The residents of Manila had nothing to do but wading through waist-deep floodwaters, dodging branches and flying debris as the typhoon sent surging waves as tall as palm trees over seawalls completely submerging neighborhoods. By the evening of September 27, at-least 7 people were reported to be killed and most of them in metropolitan Manila, a place already battered by heavy monsoonal rains. Similar to the ] during ], the Manila Hospital moved patients from its ground floor which was flooded with neck-deep waters. Hospital generators were flooded and the building had no power since the typhoon arrived. Soldiers and police in trucks moved thousands of residents, most importantly the women and the children away from the Baseco shanty after many houses were washed away in the storm surge and floodwaters brought by Nesat. The typhoon made landfall before dawn triggering instant response. Authorities ordered more than a hundred thousand people across the country to flee from Typhoon Nesat's rains and wind gusts. Several schools and offices were shut and thousands were stranded after flight and ferry services were completely disrupted by the fierce storm. Nearly thirty-seven percent of Manila Electric Company's service area was left without power after high winds and heavy rains toppled power lines. Also, in Malabon, Navotas and Valenzuela the Manila Electric power company shut down power to prevent any accidents.{{citation needed|date=September 2013}} | |||
| Over the next few days, Talas continued to drift north very slowly until late on August 29, when the JMA upgraded Talas to a typhoon.<ref>{{cite web|title=JMA - Tropical Cyclone Advisory 291800 - Typhoon Talas|url=http://www.webcitation.org/61J7fQglt|publisher=]|accessdate=2011-08-29}}</ref> Soon, a subtropical ridge to the west of the storm weakened and the subtropical ridge to the east of the system pushed Talas to the west. As a result, Talas accelerated towards the west maintaining strength and outflow.<ref>{{cite web|title=JTWC - Tropical Cyclone Advisory 25 - Tropical Storm Talas|url=http://www.webcitation.org/61LTncung|publisher=]|accessdate=2011-08-31}}</ref> An upper-level cyclone over the system suppressed the convection and kept it from reaching the center. Therefore, Talas remained weak and did not strengthen further. Convection never managed to consolidate the center and convective banding remained well away from the fully exposed low-level circulation center.<ref>{{cite web|title=JTWC - Tropical Cyclone Advisory 27 - Tropical Storm Talas|url=http://www.webcitation.org/61Mtdrpnj|publisher=]|accessdate=2011-09-01}}</ref> The convective banding continued to expand more and more with the outer ] already brushing parts of Japan. Coastal areas in the nation have already reported gale force winds several hours before landfall, while the Omega block continued to drive Talas towards the nation.<ref>{{cite web|title=JTWC - Prognostic Reasoning for Tropical Cyclone Advisory 32 - Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jtwc-prognostic-reasoning-for-tropical.html|publisher=]|accessdate=2 September 2011}}</ref> Land interaction weakened Talas, prompting the JMA to downgrade Talas from a typhoon to a severe tropical storm with winds of under {{convert|60|kn}}.<ref>{{cite web|title=JMA - Tropical Cyclone Advisory 020600 - Severe Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-020600.html|publisher=]|accessdate=2 September 2011}}</ref> Early on September 3, Talas made landfall over ], ].<ref>{{cite web|title=台風１２号 高知県に上陸へ|url=http://www3.nhk.or.jp/news/html/20110903/t10015345651000.html|publisher=]|accessdate=3 September 2011}}</ref> | |||
| During late 2011, the JTWC instead upgraded Nesat from a category 3 to a category 4 typhoon as a post-analysis. | |||
| After landfall, Talas accelerated north at over {{convert|13|kn}} and its central convection became significantly eroded and was displaced to the north-east as Talas was exposed to a very strong wind shear of over {{convert|50|kn}} that made the LLCC very distorted and difficult to pin-point. Talas was embedded in a ] and the JTWC anticipated an ], which prompted them to issue their final warning on the system.<ref>{{cite web|title=JTWC - Tropical Cyclone Advisory 40 - Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jtwc-tropical-cyclone-advisory-40.html|publisher=]|accessdate=4 September 2011}}</ref> On September 5, the JMA issued their final warning on the system, reporting that Talas has become extratropical on the ].<ref>{{cite web|title=台風１２号が温帯低気圧に|url=http://www3.nhk.or.jp/news/html/20110905/t10015388481000.html|publisher=]|accessdate=5 September 2011}}</ref><ref>{{cite web|title=JMA - Tropical Cyclone Advisory 050600 - Ex-Tropical Storm Talas|url=http://vizagbom.blogspot.com/2011/09/jma-tropical-cyclone-advisory-050600-ex.html|publisher=]|accessdate=5 September 2011}}</ref> | |||
| {{clear}} | {{clear}} | ||
| ===Tropical Storm |
===Tropical Storm Haitang=== | ||
| {{main|Tropical Storm |
{{main|Tropical Storm Haitang (2011)}} | ||
| {{Infobox tropical cyclone small | |||
| |Basin=WPac | | Basin = WPac | ||
| |Formed=September |
| Formed = September 24 | ||
| |Dissipated= |
| Dissipated = September 27 | ||
| |Image= |
| Image = Haitang 26 Sep 2011.jpg | ||
| |Track= |
| Track = Haitang 2011 track.png | ||
| |10-min winds= |
| 10-min winds = 35 | ||
| |1-min winds= |
| 1-min winds = 35 | ||
| |Pressure= |
| Pressure = 996 | ||
| }}--> | |||
| {{Infobox typhoon current | |||
| |name=Noru | |||
| |image=16W Sept 4 2011.jpg | |||
| |track=Noru 2011 track.png | |||
| |JMAtype=nwpstorm | |||
| |category=depression | |||
| |type=tropical depression | |||
| |time=0940 ] September 5<!--use time from latest advisory from JMA/JTWC or local--> | |||
| |location=] ]<br>About {{convert|520|nmi|abbr=on}} ] of ], ]<!--JTWC--> | |||
| |10sustained=40 | |||
| |1sustained=30<!--JTWC--> | |||
| |gusts=60<!--JMA--> | |||
| |pressure=994<!--JMA--> | |||
| |movement=] at {{convert|15|kn}}<!--JMA--> | |||
| |stormarticle=Tropical Storm Noru (2011) | |||
| }} | }} | ||
| On September |
On the evening of September 21, at almost the same time when Nesat was first seen, another low-pressure area persisted far south of Hong Kong.<ref name="TDi 30, 31 form">{{cite web|title=JTWC — Tropical Cyclone Warning 211500 – Tropical Storm Nesat and Tropical Depression 31 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201109211500.htm |author=Joint Typhoon Warning Center |access-date=September 24, 2011 |url-status=dead |archive-url=https://archive.today/20240522225853/https://www.webcitation.org/61um6AUnm?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201109211500.htm |archive-date=May 22, 2024 }}</ref> The low slowly drifted north and strengthened slowly until September 24, when the JMA upgraded the system to a tropical depression east of ].<ref>{{cite web|title=JMA — Tropical Cyclone Warning 240000 – Tropical Depressions 31 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency |access-date=September 24, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref> Later that day, the JTWC issued a Tropical Cyclone Formation Alert stating that the low could develop into a tropical cyclone.<ref>{{cite web|title=JTWC — Tropical Cyclone Formation Alert — Tropical Depression 31 |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |author=Joint Typhoon Warning Center |access-date=September 24, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20010430145016/http://weather.noaa.gov/pub/data/raw/wt/wtpn21.pgtw..txt |archive-date=April 30, 2001 }}</ref> Only a few hours later, the JTWC initiated advisories on the system, designating it with ''21W''.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Haitang |url=http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |author=Joint Typhoon Warning Center |access-date=September 29, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010430085744/http://weather.noaa.gov/pub/data/raw/wt/wtpn32.pgtw..txt |archive-date=April 30, 2001 }}</ref> Early the next day, the storm strengthened significantly that the JMA upgraded it to a tropical storm, naming it ''Haitang''.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 250000 – Tropical Storm Haitang |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201109250000.htm |publisher=Japan Meteorological Agency |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240522225933/https://www.webcitation.org/61xQOZFi0?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201109250000.htm |archive-date=May 22, 2024 }}</ref> Later that day, the storm developed a better organized; however, the system's low-level circulation center (LLCC) became fully exposed due to moderate vertical wind shear from the nearby system, Typhoon Nesat, which also caused the storm to remain very weak with winds of {{convert|35|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 04 – Tropical Storm Haitang |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109250900.htm |author=Joint Typhoon Warning Center |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240522173031/https://www.webcitation.org/61yyCLNO6?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109250900.htm |archive-date=May 22, 2024 }}</ref> By that night, wind shear from Nesat, which was moving closer towards Haitang, strengthened and pushed all the convection to the west-southwest keeping the storm relatively weak. Though a ridge building over China impinged poleward outflow, the euquatoward outflow remained significantly excellent. Haitang was also a slow-mover, moving westward at only {{convert|3|kn}}.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 06 – Tropical Storm Haitang |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109252100.htm |author=Joint Typhoon Warning Center |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240522230013/https://www.webcitation.org/61yyCEY8X?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109252100.htm |archive-date=May 22, 2024 }}</ref> However, by the night of September 26, Haitang rapidly accelerated west at over {{convert|13|kn}} and made landfall over ]. Though there was a burst of convection at that time, both land interaction and vertical wind shear weakened the system into a tropical depression and the JTWC ceased their advisories.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 10 – Tropical Storm Haitang |url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109262100.htm |author=Joint Typhoon Warning Center |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240522230056/https://www.webcitation.org/61zsTQrTp?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201109262100.htm |archive-date=May 22, 2024 }}</ref> The JMA tracked Haitang as a tropical depression until it finally dissipated inland Vietnam early on September 27,.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 270600 – Tropical Storm Haitang |url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201109270600.htm |publisher=Japan Meteorological Agency |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240522230135/https://www.webcitation.org/621yPMXRS?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201109270600.htm |archive-date=May 22, 2024 }}</ref> | ||
| {{clear}} | {{clear}} | ||
| ===Typhoon Nalgae (Quiel)=== | |||
| ==Storm Names== | |||
| {{main|Typhoon Nalgae (2011)}} | |||
| Within the Northwestern Pacific Ocean, there are two separate agencies who assign names to tropical cyclones which often results in a cyclone having two names. The Japan Meteorological Agency names tropical cyclones should they be judged to have 10-minute sustained windspeeds of 65 km/h, (40 mph), to the north of the equator between the ] and ]. Whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had a name assigned to it by the Japan Meteorological Agency. | |||
| {{Infobox tropical cyclone small | |||
| | Basin = WPac | |||
| | Formed = September 26 | |||
| | Dissipated = October 5 | |||
| | Image = Nalgae 2011-09-30 2332Z.png | |||
| | Track = Nalgae 2011 track.png | |||
| | 10-min winds = 95 | |||
| | 1-min winds = 130 | |||
| | Pressure = 935 | |||
| }} | |||
| On September 26, the Japan Meteorological Agency <small>(JMA)</small> started to monitor a weak tropical depression that had developed about {{convert|1260|km|mi|round=5|abbr=on}} to the northwest of ] in the ].<ref name="JMA NalBT">{{cite web|archive-url=https://web.archive.org/web/20071024084420/http://weather.noaa.gov/pub/data/raw/ax/axpq20.rjtd..txt |title=RSMC Tropical Cyclone Best Track: Typhoon Nalgae |archive-date=October 24, 2007 |author=RSMC Tokyo — Typhoon Center |publisher=Japan Meteorological Agency |date=November 14, 2011 |access-date=December 30, 2011 |url=http://www.data.jma.go.jp/fcd/yoho/data/typhoon/T1119.pdf |url-status=dead }}</ref> During that day, while the depression moved towards the northwest its low level circulation centre rapidly consolidated in an area of favourable conditions for further development of the system. This prompted the JTWC to issue a ] on the system early the next day.<ref>{{cite web|title=Tropical Cyclone Formation Alert 2011-09-27 06z |url=https://listserv.illinois.edu/wa.cgi?A2%3Dind1109d%26L%3Dwx-tropl%26T%3D0%26X%3D558D791777B97BA4EA%26P%3D90758 |archive-url=https://archive.today/20240523102917/https://www.webcitation.org/64JRxmbjb?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1109d&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=90758 |url-status=dead |archive-date=May 23, 2024 |author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force, United States Air Force |access-date=September 29, 2011 |date=September 27, 2011 }}</ref> However less than 3 hours later, the JTWC decided to issue advisories on the system designating it as Tropical Depression 22W, before the JMA reported that the depression had become a tropical storm and named it Nalgae.<ref name="JMA NalBT"/><ref>{{cite web|title=JTWC Tropical Depression 22W Warning 2011-09-27 09z |url=http://gwydir.demon.co.uk/advisories/WTPN33-PGTW_201109270900.htm |author=Joint Typhoon Warning Center |publisher=United States Navy, United States Air Force, United States Air Force |access-date=September 29, 2011 |date=September 27, 2011 |url-status=dead |archive-url=https://archive.today/20240523102318/https://www.webcitation.org/621ylenkb?url=http://gwydir.demon.co.uk/advisories/WTPN33-PGTW_201109270900.htm |archive-date=May 23, 2024 }}</ref><ref>{{cite web|title=RSMC Tropical Cyclone Advisory: Tropical Storm Nalgae 2011-09-27 18z |url=http://gwydir.demon.co.uk/advisories/WTPQ22-RJTD_201109271800.htm |author=RSMC Tokyo — Typhoon Center |publisher=Japan Meteorological Agency |date=September 27, 2011 |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240523102356/https://www.webcitation.org/621ySgolJ?url=http://gwydir.demon.co.uk/advisories/WTPQ22-RJTD_201109271800.htm |archive-date=May 23, 2024 }}</ref> | |||
| The storm slowly drifted to the west and kept on intensifying gradually. Nalgae developed a microwave eye like feature and well defined convective banding in all the quadrants. The system had a tiny radius of winds, though it was still strengthening significantly and was very well defined.<ref>{{cite web|title=JTWC — Tropical Cyclone Advisory 07 – Typhoon Nalgae |url=http://gwydir.demon.co.uk/advisories/WTPN33-PGTW_201109282100.htm |author=Joint Typhoon Warning Center |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240523102518/https://www.webcitation.org/623TrLOhr?url=http://gwydir.demon.co.uk/advisories/WTPN33-PGTW_201109282100.htm |archive-date=May 23, 2024 }}</ref> On the evening of September 28, the JMA reported that Nalgae continued to intensify, as they upgraded it to a severe tropical storm with winds of over {{convert|55|kn}}.<ref>{{cite web|title=JMA — Tropical Cyclone Advisory 281800 – Typhoon Nalgae |url=http://gwydir.demon.co.uk/advisories/WTPQ22-RJTD_201109281800.htm |publisher=Japan Meteorological Agency |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240523102437/https://www.webcitation.org/623The4yG?url=http://gwydir.demon.co.uk/advisories/WTPQ22-RJTD_201109281800.htm |archive-date=May 23, 2024 }}</ref> On that night, the PAGASA initiated advisories on Nalgae, giving it the local name ''Quiel'', as it entered the Philippine Area of Responsibility (PAR).<ref>{{cite web|title=Severe Weather Bulletin Number ONE — Tropical Storm "QUIEL" |url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109282100.htm |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |access-date=September 29, 2011 |url-status=dead |archive-url=https://archive.today/20240523102558/https://www.webcitation.org/623Twr7tW?url=http://gwydir.demon.co.uk/advisories/TCUPDATE_201109282100.htm |archive-date=May 23, 2024 }}</ref> Late on September 29, the JMA upgraded Nalgae to a typhoon. Nalgae rapidly intensified on September 30, and attained category 4 super typhoon status early on October 1, just before making landfall over ]. Due to land interaction and colder ] in the ], the JMA downgraded Nalgae to a severe tropical storm on October 2, and then a tropical storm late on October 3. The JTWC downgraded Nalgae to a tropical depression on October 4, and the JMA also did it on the next day. Later on October 5, the remnant low of Nalgae dissipated. | |||
| ===International names=== | |||
| {{See also|Lists of tropical cyclone names|Tropical cyclone naming}} | |||
| Tropical Cyclones are named from the following lists by the ] in Tokyo, Japan, once they reach tropical storm strength.<ref name="Padgett Dec 99">{{Cite web|title=Monthly Tropical Cyclone summary December 1999|accessdate=2008-04-20|publisher=Australian Severe Weather|author=Gary Padgett|url=http://www.australiasevereweather.com/cyclones/2000/summ9912.htm}}</ref> Names are contributed by members of the ]. Each of the 14 nations or territories submitted 10 names, which are used in alphabetical order, by the English name of the country.<ref name="JMA Names">{{Cite web|title=Tropical Cyclone names|accessdate=2008-04-20|publisher=JMA|url=http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/tyname.html}}</ref> The next 24 names on the naming list are listed here. | |||
| Striking the Philippines just days after Typhoon Nesat, Nalgae caused further damage across Luzon. Although first feared that Nalgae would cause much more damage to Luzon, which was severely affected by Typhoon Nesat, damage from the storm was not as anticipated to be lighter than Typhoon Nesat, which ironically is much weaker than Nalgae, but high winds and heavy rains from the storm caused widespread power outages and flooding that left many communities isolated. Nearly 2,900 homes were destroyed and approximately another 15,400 sustained damage. At least 18 people were killed by the storm and another 7 were reported as missing as of October 11. A total of 1,113,763 people were affected by the storm. Total losses in the country reached just over 115 million PHP (US$2.62 million).<ref>{{cite web|publisher=National Disaster Risk Reduction and Management Council |date=November 11, 2011 |access-date=November 30, 2011 |title=NDRRMC Update SitRep No. 13 on Typhoon "Quiel" (Nalgae) |url=http://www.ndrrmc.gov.ph/attachments/article/310/NDRRMC%20Update%20Sitrep%20No.Sitrep%20No.13%20re%20Effects%20of%20Typhoon%20QUIEL%20(NALGAE)%20as%20of%2011OCT2011,%206AM.pdf }}{{dead link|date=June 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> | |||
| {| style="width:100%;" | |||
| {{clear}} | |||
| | | |||
| * Aere (1101) | |||
| * Songda (1102) | |||
| * Sarika (1103) | |||
| * Haima (1104) | |||
| * Meari (1105) | |||
| * Ma-on (1106) | |||
| | | |||
| * Tokage (1107) | |||
| * Nock-ten (1108) | |||
| * Muifa (1109) | |||
| * Merbok (1110) | |||
| * Nanmadol (1111) | |||
| * Talas (1112) | |||
| | | |||
| * {{tcname active|Noru (1113)}} | |||
| * {{tcname unused|Kulap}} | |||
| * {{tcname unused|Roke}} | |||
| * {{tcname unused|Sonca}} | |||
| * {{tcname unused|Nesat}} | |||
| * {{tcname unused|Haitang}} | |||
| | | |||
| * {{tcname unused|Nalgae}} | |||
| * {{tcname unused|Banyan}} | |||
| * {{tcname unused|Washi}} | |||
| * {{tcname unused|Pakhar}} | |||
| * {{tcname unused|Sanvu}} | |||
| * {{tcname unused|Mawar}} | |||
| |} | |||
| ===Tropical Storm Banyan (Ramon)=== | |||
| ===Philippines=== | |||
| {{Infobox tropical cyclone small | |||
| The ] uses its own naming scheme for tropical cyclones in their area of responsibility. PAGASA assigns names to tropical depressions that form within their area of responsibility and any tropical cyclone that might move into their area of responsibility. Should the list of names for a given year prove to be insufficient, names are taken from an auxiliary list, the first 10 of which are published each year before the season starts.<ref name="PAGASA Names">{{Cite web|title=Philippine Tropical cyclone names|date=2010-09-22|author=Staff Writer|accessdate=2010-09-23|publisher=Philippine Atmospheric, Geophysical and Astronomical Services. The next name will be used Lando Administration|url=http://www.webcitation.org/5sxZr5xi3}}</ref> | |||
| | Basin = WPac | |||
| | Formed = October 9 | |||
| | Dissipated = October 14 | |||
| | Image = Banyan-11-Oct-2011.jpg | |||
| | Track = Banyan 2011 track.png | |||
| | 10-min winds = 35 | |||
| | 1-min winds = 30 | |||
| | Pressure = 1002 | |||
| }} | |||
| On October 7, the JTWC started monitoring a tropical disturbance that had developed in an area of low vertical windshear, about {{convert|750|km|mi|abbr=on}} to the south of ].<ref>{{cite web|author=Joint Typhoon Warning Center |title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-10-07 06z |access-date=March 6, 2012 |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=February 16, 2007 |publisher=United States Navy, United States Air Force |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |url-status=dead }}</ref> Over the next couple of days the system gradually developed further while moving towards the west, before the JMA reported on October 9, that the disturbance had developed into a tropical depression.<ref name="JMA BANBT">{{cite web|title=RSMC Tropical Cyclone Best Track: Tropical Storm Banyan |archive-url=https://web.archive.org/web/20071024084420/http://weather.noaa.gov/pub/data/raw/ax/axpq20.rjtd..txt |author=RSMC Tokyo — Typhoon Center |date=November 14, 2011 |archive-date=October 24, 2007 |publisher=Japan Meteorological Agency |access-date=December 30, 2011 |url=http://www.data.jma.go.jp/fcd/yoho/data/typhoon/T1120.pdf |url-status=dead }}</ref> Early on October 10, the JTWC upgraded the system to a tropical depression designating as ''23W'', and the PAGASA also upgraded it to a tropical depression and named it ''Ramon''. On October 11, the JMA and the JTWC upgraded the system to a tropical storm and named it ''Banyan''. Early on October 12, Banyan made landfall over ], Philippines, and the JTWC downgraded it to a tropical depression. A half day later, the JMA also downgraded Banyan to a tropical depression. The system dissipated in the ], on October 16,. | |||
| {| style="width:90%;" | |||
| | | |||
| While tracking through the Philippines, Banyan produced heavy rains across much of the country, leading to widespread flooding. At least ten people were killed by the storm and another was reported missing. A total of 75,632 people were affected by the storm.<ref>{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=October 19, 2011 |access-date=November 29, 2011 |title=NDRRMC Update SitRep No. 15 on Tropical Storm "Ramon" |url=http://www.ndrrmc.gov.ph/attachments/article/322/NDRRMC%20Update%20Sitrep%20No.%2015%20re%20Effects%20of%20Tropical%20Storm%20RAMON.pdf }}{{dead link|date=June 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> | |||
| * Amang (02W) | |||
| {{clear}} | |||
| * Bebeng (1101) | |||
| * Chedeng (1102) | |||
| ===Tropical Depression 24W=== | |||
| * Dodong (1103) | |||
| {{Infobox tropical cyclone small | |||
| * Egay (1104) | |||
| | Basin = WPac | |||
| | | |||
| | WarningCenter = | |||
| * Falcon (1105) | |||
| | Image = 24-W Nov 7 2011 0620Z.jpg | |||
| * Goring | |||
| | Formed = November 7 | |||
| * Hanna (1107) | |||
| | Dissipated = November 8 | |||
| * Ineng (1106) | |||
| | Track = 24W 2011 track.png | |||
| * Juaning (1108) | |||
| | Pressure = 1004 | |||
| | | |||
| | 10-min winds = 25 | |||
| * Kabayan (1109) | |||
| | 1-min winds = 25 | |||
| * Lando | |||
| }} | |||
| * Mina (1111) | |||
| On November 5, the JTWC started to monitor a tropical disturbance that had developed within an area of low vertical windshear, about {{convert|640|km|mi|round=5|abbr=on}} to the east-southeast of Ho Chi Minh City in Vietnam.<ref name="STWA 05/11">{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt|archive-url=https://archive.today/20240522173151/https://www.webcitation.org/62zdya82r?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201111050600.htm|title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans November 5, 2011 06z|author=Joint Typhoon Warning Center|archive-date=May 22, 2024|url-status=live|access-date=August 7, 2013|date=November 5, 2011|publisher=United States Navy, United States Air Force}}</ref> Over the next couple of days the disturbance moved towards the north-northwest as atmospheric convection surrounding the system wrapped into the disturbances developing low-level circulation center. During November 7, the JMA and the JTWC reported that the disturbance had become a tropical depression and started to warn on it with the latter designating it as Tropical Depression 24W. <!-- On November 8, the JTWC issued its final advisory on the system as it started weakening due to cold air from the north. On November 10, the JMA reported that the system weakened to a low pressure area. --> | |||
| * {{tcname unused|Nonoy}} | |||
| {{clear}} | |||
| * {{tcname unused|Onyok}} | |||
| | | |||
| ===Tropical Depression 25W=== | |||
| * {{tcname unused|Pedring}} | |||
| {{Infobox tropical cyclone small | |||
| * {{tcname unused|Quiel}} | |||
| | Basin = WPac | |||
| * {{tcname unused|Ramon}} | |||
| | WarningCenter = JMA | |||
| * {{tcname unused|Sendong}} | |||
| | Image = 25-W Dec 4 2011 0300Z.jpg | |||
| * {{tcname unused|Tisoy}} | |||
| | Formed = December 3 | |||
| | | |||
| | Dissipated = December 5 | |||
| * {{tcname unused|Ursula}} | |||
| | Track = 25W 2011 track.png | |||
| * {{tcname unused|Viring}} | |||
| | Pressure = 1006 | |||
| * {{tcname unused|Weng}} | |||
| | 10-min winds = | |||
| * {{tcname unused|Yoyoy}} | |||
| | 1-min winds = 25 | |||
| * {{tcname unused|Zigzag}} | |||
| }} | |||
| During December 3, the JTWC started to monitor a tropical disturbance, that had developed within an area of moderate vertical windshear, about {{convert|180|km|mi|round=5|abbr=on}} to the northwest of Bandar Seri Begawan, Brunei.<ref name="STWA 03/12">{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt|archive-url=https://archive.today/20240522173318/https://www.webcitation.org/63hgY4u9f?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201112032330.htm|title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans December 3, 2011 06z|author=Joint Typhoon Warning Center|url-status=dead|archive-date=May 22, 2024|access-date=August 7, 2013|date=December 3, 2011|publisher=United States Navy, United States Air Force}}</ref><ref name="25P BT">{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bwp/bwp252011.dat |author=Joint Typhoon Warning Center |archive-date=July 2, 2012 |url-status=live |archive-url=https://web.archive.org/web/20120702114645/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bwp/bwp252011.dat |access-date=August 7, 2013 |title=Tropical Depression 25W Best Track Analysis |publisher=United States Navy, United States Airforce }}</ref> During that day deep atmospheric convection surrounding the system built over the disturbances low level circulation, before the JTWC reported during the next day, that the disturbance had developed into a tropical cyclone and designated it as Tropical Depression 25W.<ref name="STWA 03/12"/><ref name="25P BT"/><ref>{{cite report |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/wp2511web.txt |date=December 4, 2011 |access-date=August 5, 2013 |author=Joint Typhoon Warning Center |archive-date=May 22, 2024 |title=Tropical Cyclone 25W Warning 1; December 4, 2011 15z |archive-url=https://archive.today/20240522173234/https://www.webcitation.org/63hgjcXvY?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201112041500.htm |publisher=United States Navy, United States Air Force |url-status=dead }}</ref> Despite being predicted to intensify into a tropical storm after being designated, the depression moved towards the northwest and rapidly deteriorated as it interacted with the cold and dry north-easterlies, as a result the JTWC issued their final warning on the system early on December 5.<ref name="25W AD3">{{cite report |url=http://www.usno.navyph/RSS/jtwc/warnings/wp2511web.txt |date=December 5, 2011 |access-date=August 5, 2013 |author=Joint Typhoon Warning Center |archive-date=May 23, 2024 |title=Tropical Cyclone 25W Warning 3; December 5, 2011 09z |archive-url=https://archive.today/20240523161104/https://www.webcitation.org/63hgjU3yZ?url=http://gwydir.demon.co.uk/advisories/WTPN31-PGTW_201112050300.htm |publisher=United States Navy, United States Air Force |url-status=dead }}</ref> | |||
| {| style="width:90%;" | |||
| <center> | |||
| {{clear}} | |||
| '''Auxiliary list'''<br> | |||
| </center> | |||
| ===Tropical Depression 26W=== | |||
| | | |||
| {{Infobox tropical cyclone small | |||
| * {{tcname unused|Abe}} | |||
| | Basin = WPac | |||
| * {{tcname unused|Berto}} | |||
| | WarningCenter = JMA | |||
| | | |||
| | Image = 26-W Dec 11 2011 0605Z.jpg | |||
| * {{tcname unused|Charo}} | |||
| | Formed = December 10 | |||
| * {{tcname unused|Dado}} | |||
| | Dissipated = December 14 | |||
| | | |||
| | Track = 26W 2011 track.png | |||
| * {{tcname unused|Estoy}} | |||
| | Pressure = 1004 | |||
| * {{tcname unused|Felion}} | |||
| | 10-min winds = 30 | |||
| | | |||
| | 1-min winds = 30 | |||
| * {{tcname unused|Gening}} | |||
| }} | |||
| * {{tcname unused|Herman}} | |||
| On December 9, the JTWC started to monitor a tropical disturbance that had developed about {{convert|550|km|mi|round=5|abbr=on}} to the south-southeast of Manila on Luzon Island.<ref name="26W BT">{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bwp/bwp262011.dat |author=Joint Typhoon Warning Center |archive-date=July 2, 2012 |url-status=live |archive-url=https://web.archive.org/web/20120702114645/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bwp/bwp252011.dat |access-date=August 7, 2013 |title=Tropical Depression 26W Best Track Analysis |publisher=United States Navy, United States Airforce }}</ref> On December 11, the JTWC cancelled the TCFA on the disturbance due to the interaction with the cold air coming from the north. The tropical depression reached peak intensity during midday, on December 11, as it was located over the center, of the ]. But later that day, the depression began to weaken rapidly, as the storm moved southeastward. However, the JTWC issued a TCFA on the disturbance again early on December 12, because of a decrease in vertical wind shear. After a few hours, the JTWC upgraded it to a tropical depression and designated as ''26W''. After a couple of days drifting southwestwards in the South China Sea, on December 13, the JTWC issued their final advisories on the system as it started to weaken. Late on December 14, the tropical depression dissipated near ]. | |||
| | | |||
| {{clear}} | |||
| * {{tcname unused|Irma}} | |||
| * {{tcname unused|Jaime}} | |||
| ===Severe Tropical Storm Washi (Sendong)=== | |||
| {{main|Tropical Storm Washi}} | |||
| {{Infobox tropical cyclone small | |||
| | Basin = WPac | |||
| | Formed = December 13 | |||
| | Dissipated = December 19 | |||
| | Image = 2011 Washi.jpg | |||
| | Track = Washi 2011 track.png | |||
| | 10-min winds = 50 | |||
| | 1-min winds = 50 | |||
| | Pressure = 992 | |||
| }} | |||
| On December 11, a disturbance formed and persisted near ]. On December 13, the low-pressure area rapidly intensified prompting the JTWC to issue a TCFA. On the same day, the JTWC upgraded the low pressure to a tropical depression and designated as ''27W''; in addition, the JMA also upgraded it to a tropical depression. The JTWC upgraded the system to a tropical storm on December 14, but downgraded it to a tropical depression early on December 15, and the PAGASA designated it ''Sendong'' as it entered the Philippine Area of Responsibility. After passing ] on December 15, both the JTWC and the JMA upgraded the system to a tropical storm and named it ''Washi''. On December 16, Washi made landfall over ], a province of the ] located in ]. Several hours later, Washi arrived at the ] and regained its strength quickly, due to slight land interaction with Mindanao. Late on December 17, Washi crossed ], and arrived at the ]. On December 19, Washi weakened into a tropical depression and dissipated. | |||
| In the Philippines, Washi has caused at least 1,268 fatalities, and 1,079 people are officially listed as missing. Washi had affected 102,899 families or 674,472 people in 766 villages in 52 towns and eight cities in 13 provinces.<ref name="washi data">{{cite web|url=http://news.xinhuanet.com/english/world/2011-12/25/c_131326068.htm|archive-url=https://web.archive.org/web/20120422083133/http://news.xinhuanet.com/english/world/2011-12/25/c_131326068.htm|url-status=dead|archive-date=April 22, 2012|title=Death toll from tropical storm climbs to 1,236 in Philippines|date=December 25, 2011|publisher=English.news.cn|access-date=December 25, 2011|location=Philippines}}</ref><ref name="washi official">{{cite web|url=http://www.ndrrmc.gov.ph/attachments/article/358/NDRRMC%20Update%20Sitrep%20No.11%20as%20of%2020%20Dec%202011,%206AM.pdf |title=SitRep No.11 re Effects of Tropical Storm "SENDONG" (WASHI) |date=December 20, 2011 |publisher=National Disaster Risk Reduction and management council |access-date=December 20, 2011 |location=Philippines |url-status=dead |archive-url=https://web.archive.org/web/20120119031401/http://www.ndrrmc.gov.ph/attachments/article/358/NDRRMC%20Update%20Sitrep%20No.11%20as%20of%2020%20Dec%202011%2C%206AM.pdf |archive-date=January 19, 2012 }}</ref> The majority of the deaths were in the cities of ] and ]. Five people were killed in a landslide, but all others died in flash flooding. More than 2,000 have been rescued, according to the Armed Forces of the Philippines. Officials were also investigating reports that an entire village was swept away. The flash flooding occurred overnight, following 10 hours of rain, compounded by overflowing rivers and tributaries. In some areas, up to 20 centimeters of rain fell in 24 hours. At least 20,000 people were staying in 10 evacuation centers in Cagayan de Oro. Officials said that despite government warning, some people did not evacuate. At least 9,433 houses were destroyed while 18,616 were damaged.<ref name="washi cnn">{{cite web|title=Death toll from Philippine storm reaches 569; hundreds missing|date=December 18, 2011 |url=http://edition.cnn.com/2011/12/18/world/asia/philippines-storm/index.html|publisher=CNN|access-date=December 18, 2011}}</ref> | |||
| {{clear}} | |||
| ===Other systems=== | |||
| ] | |||
| The following weak tropical depressions were also monitored by one or more of the warning centers, however they were either short lived or did not significantly develop further. On May 31, the JMA reported that a tropical depression had developed at the southern end of a shear line, about {{convert|420|km|mi|abbr=on}} to the southeast of Hong Kong, China.<ref>{{cite web|title=JMA WWJP25 Warning and Summary 2011-05-31 18z |url-status=dead |archive-date=May 2, 2001 |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |access-date=March 5, 2012 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency }}</ref><ref>{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |title=Significant Tropical Weather Outlook for the Western and South Pacific Oceans 2011-05-30 06z |author=Joint Typhoon Warning Center |url-status=dead |archive-date=February 16, 2007 |access-date=December 28, 2011 |publisher=United States Navy, United States Air Force }}</ref> During that day as the depression moved towards the north-northeast, a trough of low pressure located over Hainan island and dry cold air wrapping into the depression's circulation inhibited further development of the depression.<ref>{{cite web|archive-url=https://web.archive.org/web/20100305204921/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |access-date=March 5, 2012 |archive-date=March 5, 2010 |title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-01 14z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |publisher=United States Navy, United States Airforce |author=Joint Typhoon Warning Center |url-status=dead }}</ref> The depression then degenerated into an area of low pressure during the next day, before it dissipated during June 2,.<ref>{{cite web|archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |access-date=December 28, 2011 |archive-date=May 2, 2001 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-06-01 18z |publisher=Japan Meteorological Agency |url-status=live }}</ref><ref>{{cite web|title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-02 06z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=May 22, 2024 |publisher=United States Navy, United States Air Force |author=Joint Typhoon Warning Center |access-date=March 5, 2012 |archive-url=https://archive.today/20240522173352/https://www.webcitation.org/64GJ7iXkA?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1106a&L=wx-tropl&D=0&T=0&X=558D791777B97BA4EA&P=7911 |url-status=dead }}</ref> On June 14, the JMA reported that a tropical depression had developed within an area of moderate vertical windshear, about {{convert|475|mi|km|abbr=on}} to the southwest of Manila, Philippines.<ref>{{cite web|archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |access-date=March 10, 2012 |archive-date=May 2, 2001 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-06-14 18z |publisher=Japan Meteorological Agency |url-status=live }}</ref><ref>{{cite web|title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-14 06z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=February 16, 2007 |publisher=United States Navy, United States Air Force |author=Joint Typhoon Warning Center |access-date=March 10, 2012 |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |url-status=dead }}</ref> During that day the depression moved to the north-northwest, before the system dissipated during the next day.<ref>{{cite web|title=Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-15 20z |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abpwweb.txt |archive-date=February 16, 2007 |publisher=United States Navy, United States Air Force |author=Joint Typhoon Warning Center |access-date=March 10, 2012 |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |url-status=dead }}</ref> On July 16, the JMA reported that a tropical depression had developed about {{convert|225|km|mi|abbr=on}} to the east of Hanoi in northern Vietnam, however it quickly weakened after interacting with land.<ref>{{cite web|archive-url=https://archive.today/20240523161302/https://www.webcitation.org/63u9QCKnP?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201107160000.htm |access-date=March 5, 2012 |archive-date=May 23, 2024 |publisher=Japan Meteorological Agency |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-07-16 00z |url-status=live }}</ref><ref>{{cite web|archive-url=https://archive.today/20240523161826/https://www.webcitation.org/666xTv7mJ?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1107c&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=19058 |access-date=March 5, 2012 |archive-date=May 23, 2024 |publisher=Japan Meteorological Agency |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-07-16 06z |url-status=dead }}</ref> {{citation needed span|text=In the morning of July 16, the Japan Meteorological Agency located in an area of low pressure on the land was upgraded to a tropical depression later on the same day. On July 17, the JMA downgraded the tropical depression to a low pressure. The Hong Kong Observatory only classified the tropical depression as a trough of low pressure is not to be ignored, while the Joint Typhoon Warning Center nor recognize this as a tropical disturbance.|date=May 2014}} On August 19, a low-pressure area developed ] of ].<ref>{{cite web|title=JTWC Tropical Cyclone Warning 190030 – Pre-Tropical Depression 22 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108190030.htm |author=Joint Typhoon Warning Center |access-date=August 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523160256/https://www.webcitation.org/6152C2Adu?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108190030.htm |archive-date=May 23, 2024 }}</ref> Early on August 20, the system developed a broad area of low level circulation center and a good ] becoming more well defined.<ref>{{cite web|title=JTWC Tropical Cyclone Warning 200100 – Pre-Tropical Depression 22 |url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108200100.htm |author=Joint Typhoon Warning Center |access-date=August 21, 2011 |url-status=dead |archive-url=https://archive.today/20240523104449/https://www.webcitation.org/6151uraG4?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201108200100.htm |archive-date=May 23, 2024 }}</ref> Later that day, the JMA upgraded the system to a tropical depression southeast of the ].<ref name="JMA TDi22 ADV200600">{{cite web|title=JMA — Tropical Cyclone Advisory 200600 – Tropical Depression 22 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 20, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref> On August 22, the system started interacting with an ] and was exposed to a strong vertical wind shear, prompting the JMA to stop monitoring the system as a tropical depression, as the system dissipated to a remnant low.<ref name="JMA TDi22 ADV221200">{{cite web|title=JMA — Tropical Cyclone Advisory 221200 – Tropical Depression 22 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 22, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref><ref>{{cite web|title=JTWC — Tropical Cyclone Warning 221430 – Tropical Depression 22 |url=http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |author=Joint Typhoon Warning Center |access-date=August 22, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20070216233156/http://weather.noaa.gov/pub/data/raw/ab/abpw10.pgtw..txt |archive-date=February 16, 2007 }}</ref> However, at midnight, the same day, the remnants regenerated, and the JMA started tracking the system as a tropical depression again, until it last appeared near ], Japan on August 25, as the system dissipated completely.<ref name="JMA TDi22 ADV230000">{{cite web|title=JMA — Tropical Cyclone Advisory 230000 – Tropical Depression 22, 23, 24 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 23, 2011 |url-status=live |archive-url=https://web.archive.org/web/20010502184435/http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-date=May 2, 2001 }}</ref><ref name="JMA TDi22 ADV250000">{{cite web|title=JMA — Tropical Cyclone Advisory 250000 – Tropical Depression 22 |url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201108250000.htm |work=JMA Tropical Cyclone Advisories |publisher=Japan Meteorological Agency |access-date=August 25, 2011 |url-status=dead |archive-url=https://archive.today/20240523160337/https://www.webcitation.org/61CO2qP8l?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201108250000.htm |archive-date=May 23, 2024 }}</ref> On September 14, the JMA started to monitor a tropical depression that had developed about {{convert|720|km|mi|abbr=on}} to the southeast of Taipei in Taiwan.<ref name="WWJP25 14/09">{{cite web|title=JMA WWJP25 Warning and Summary 2011-09-14 00z|publisher=Japan Meteorological Agency|archive-url=https://archive.today/20240523161223/https://www.webcitation.org/63u8VM583?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201109140000.htm|access-date=March 5, 2012|archive-date=May 23, 2024|url-status=dead|url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt}}</ref> During that day, the depression remained near stationary, before becoming stationary, the JMA then last noted the depression late on September 15, as it was absorbed by Typhoon Roke.<ref name="WWJP25 14/09"/><ref>{{cite web|title=JMA WWJP25 Warning and Summary 2011-09-15 18z |archive-url=https://archive.today/20240523161139/https://www.webcitation.org/63u8Uqbvc?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201109151800.htm |access-date=March 5, 2012 |archive-date=May 23, 2024 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |publisher=Japan Meteorological Agency |url-status=live }}</ref><ref>{{cite web|archive-url=https://archive.today/20240523161741/https://www.webcitation.org/65wBVlnzH?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1109c&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=16440 |access-date=March 5, 2012 |archive-date=May 23, 2024 |publisher=Japan Meteorological Agency |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-09-16 00z |url-status=dead }}</ref> | |||
| {{citation needed span|text=On October 11, the JMA reported that a tropical depression had developed to the southeast of Hainan Island. Late on October 13, the system dissipated, just after making landfall over ].|date=November 2013}} | |||
| On December 24, the JMA reported that a tropical depression had developed about {{convert|1768|km|mi|abbr=on}} to the southeast of Manila, in the Philippines.<ref>{{cite web|title=JMA WWJP25 Warning and Summary 2011-12-24 12z |archive-date=May 23, 2024 |access-date=March 4, 2012 |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-url=https://archive.today/20240523161705/https://www.webcitation.org/65uiM6JRL?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1112d&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=34369 |url-status=dead |publisher=Japan Meteorological Agency }}</ref> During that day, the depression moved towards the northwest before the JMA issued their final advisory on the system.<ref>{{cite web|publisher=Japan Meteorological Agency |title=JMA WWJP25 Warning and Summary 2011-12-24 18z |access-date=March 12, 2012 |archive-date=May 23, 2024 |url-status=dead |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-url=https://archive.today/20240523161342/https://www.webcitation.org/64EEEOGeK?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201112241800.htm }}</ref><ref>{{cite web|access-date=March 12, 2012 |archive-date=May 23, 2024 |url-status=dead |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |archive-url=https://archive.today/20240523161342/https://www.webcitation.org/64EEEOGeK?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201112241800.htm |title=JMA WWJP25 Warning and Summary 2011-12-25 00z |publisher=Japan Meteorological Agency }}</ref> The final tropical depression of the year then developed on December 31, about {{convert|340|km|mi|round=5|abbr=on}} to the northeast of ], Malaysia.<ref>{{cite web|url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |access-date=March 4, 2012 |url-status=dead |archive-url=https://archive.today/20240522173554/https://www.webcitation.org/64Q5Yhaft?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201112310600.htm |title=JMA WWJP25 Warning and Summary 2011-12-31 06z |archive-date=May 22, 2024 |publisher=Japan Meteorological Agency }}</ref> During that day the system moved slowly towards the northwest before it was last noted early the next day on January 1, 2012.<ref>{{cite web|url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2011-12-31 18z |archive-url=https://archive.today/20240523161622/https://www.webcitation.org/64Q5XhOHk?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201201010600.htm |access-date=March 4, 2012 |publisher=Japan Meteorological Agency |archive-date=May 23, 2024 |url-status=live }}</ref><ref>{{cite web|publisher=Japan Meteorological Agency |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2012-01-01 06z |archive-url=https://archive.today/20240523161622/https://www.webcitation.org/64Q5XhOHk?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201201010600.htm |archive-date=May 23, 2024 |access-date=March 12, 2012 |url-status=live }}</ref><ref>{{cite web|publisher=Japan Meteorological Agency |url=http://weather.noaa.gov/pub/data/raw/ww/wwjp25.rjtd..txt |title=JMA WWJP25 Warning and Summary 2012-01-01 12z |archive-url=https://archive.today/20240526024801/https://www.webcitation.org/69WQGOJwv?url=https://listserv.illinois.edu/wa.cgi%3FA2=ind1201a&L=wx-tropl&T=0&X=558D791777B97BA4EA&P=4816 |archive-date=May 26, 2024 |access-date=March 12, 2012 |url-status=dead }}</ref> | |||
| ==Storm names== | |||
| {{See also|Tropical cyclone naming|History of tropical cyclone naming}} | |||
| Within the North-western Pacific Ocean, both the ] (JMA) and the ] assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names.<ref name="Padgett Dec 99">{{cite web|title=Monthly Tropical Cyclone summary December 1999 |access-date=August 28, 2012 |url-status=live |author=Padgett, Gary |publisher=Australian Severe Weather |url=http://www.australiasevereweather.com/cyclones/2000/summ9912.htm |archive-url=https://web.archive.org/web/20020209141515/http://www.australiasevereweather.com/cyclones/2000/summ9912.htm |archive-date=February 9, 2002 }}</ref> The Japan Meteorological Agency's RSMC Tokyo — Typhoon Center assigns international names to tropical cyclones on behalf of the ]'s Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of {{convert|65|km/h|mph|abbr=on}}.<ref name="TC">{{cite web|title=Typhoon Committee Operational Manual 2012 |url=http://www.wmo.int/pages/prog/www/tcp/documents/TCP-23EDITION2012.pdf |archive-url=https://web.archive.org/web/20130801020116/http://www.wmo.int/pages/prog/www/tcp/documents/TCP-23EDITION2012.pdf |publisher=World Meteorological Organization |archive-date=August 1, 2013 |pages=37–38 |date=February 21, 2012 |author=the Typhoon Committee |url-status=live }}</ref> While the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had an international name assigned to it.<ref name="Padgett Dec 99"/> The names of significant tropical cyclones are retired, by both ] and the ].<ref name="TC"/> Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in {{tcname unused}}. | |||
| === International names === | |||
| {{main|List of retired Pacific typhoon names}} | |||
| During the season 21 tropical storms developed in the Western Pacific and each one was named by the JMA, when the system was judged to have 10-minute sustained windspeeds of {{convert|65|km/h|mph|round=5|abbr=on}}. The JMA selected the names from a list of 140 names, that had been developed by the 14 members nations and territories of the ]. | |||
| {| class="wikitable" | |||
| |- | |||
| | Aere || Songda || Sarika || Haima || Meari || Ma-on || Tokage || Nock-ten || Muifa || Merbok || Nanmadol | |||
| |- | |||
| | Talas || Noru || Kulap || Roke || Sonca || Nesat || Haitang || Nalgae || Banyan || Washi | |||
| |} | |} | ||
| ===Retirement=== | ===Retirement=== | ||
| After the season the Typhoon Committee retired the name ''Washi'' from its naming lists, and in February 2012, it was subsequently replaced with ''Hato'' for future seasons. | |||
| {{See also|List of retired Pacific typhoon names (JMA)|List of retired Philippine typhoon names}} | |||
| The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) announced that the names ''Bebeng'', ''Juaning'' and ''Mina'' would be stricken off their Tropical Cyclone Naming lists due to extensive damage and loss of life.<ref>{{cite web|author=Helen Flores|publisher=The Philippine Star|date=May 16, 2011|accessdate=May 16, 2011|title= 'Bebeng' out of Pagasa name list |url=http://www.philstar.com/Article.aspx?articleId=686502&publicationSubCategoryId=63}}</ref><ref>{{cite web|url=http://www.philstar.com/nation/article.aspx?publicationsubcategoryid=63&articleid=711776|title=3 provinces told: Brace for floods|last=Flores|first=Helen|date=2011-07-30|publisher=The Philippine Star|accessdate=2011-08-08}}</ref><ref>{{cite web|url=http://www.philstar.com/Article.aspx?articleId=722574&publicationSubCategoryId=63|title=3 destructive cyclones expected this month - Pagasa|last=Flores|first=Helen|date=2011-09-01|publisher=The Philippine Star|accessdate=2011-09-02}}</ref> | |||
| ===Philippines=== | |||
| {{main|List of retired Philippine typhoon names}} | |||
| {| class="wikitable" align=right | |||
| |- | |||
| | Amang || Bebeng || Chedeng || Dodong || Egay | |||
| |- | |||
| | Falcon || Goring || Hanna || Ineng || Juaning | |||
| |- | |||
| | Kabayan || Lando || Mina || Nonoy || Onyok | |||
| |- | |||
| | Pedring || Quiel || Ramon || Sendong || {{tcname unused|Tisoy}} | |||
| |- | |||
| | {{tcname unused|Ursula}} || {{tcname unused|Viring}} || {{tcname unused|Weng}} || {{tcname unused|Yoyoy}} || {{tcname unused|Zigzag}} | |||
| |- | |||
| ! colspan=5|Auxiliary list | |||
| |- | |||
| | {{tcname unused|Abe}} || {{tcname unused|Berto}} || {{tcname unused|Charo}} || {{tcname unused|Dado}} || {{tcname unused|Estoy}} | |||
| |- | |||
| | {{tcname unused|Felion}} || {{tcname unused|Gening}} || {{tcname unused|Herman}} || {{tcname unused|Irma}} || {{tcname unused|Jaime}} | |||
| |} | |||
| During the season PAGASA used its own naming scheme for the 19 tropical cyclones, that either developed within or moved into their self-defined area of responsibility.<ref name="PAGASA Names">{{cite web|title=Philippine Tropical Cyclone Names|access-date=January 20, 2016|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|url=http://www.pagasa.dost.gov.ph/index.php/learning-tools/94-weather/278-philippine-tropical-cyclone-names|url-status=dead|archive-url=https://web.archive.org/web/20161228042559/http://www.pagasa.dost.gov.ph/index.php/learning-tools/94-weather/278-philippine-tropical-cyclone-names|archive-date=December 28, 2016}}</ref> The names were taken from a list of names, that had been last used during ] and are scheduled to be used again during ].<ref name="PAGASA Names"/> The names ''Nonoy'', ''Onyok'', ''Pedring'', ''Quiel'', ''Ramon,'' and ''Sendong'' were used for the first (and only, in the cases of ''Pedring'' and ''Sendong'') time during the year. | |||
| {{clear}} | |||
| === Retirement === | |||
| After this season, the Typhoon Committee retired the name ''Washi'' from its naming lists, and in February 2012, it was subsequently replaced with ''Hato'' for future seasons. | |||
| Meanwhile, the names ''Bebeng'', ''Juaning'', ''Mina'', ''Pedring,'' and ''Sendong'' were retired by PAGASA, as they had caused over ]1 billion in damages, and in ''Sendong'''s case, over 300 deaths. They were subsequently replaced on the list with ''Betty'', ''Jenny'', ''Marilyn'', ''Perla,'' and ''Sarah''.<ref>{{cite news |title=3 destructive cyclones expected this month — Pagasa |url=http://www.philstar.com/Article.aspx?articleId=722574&publicationSubCategoryId=63 |author=Flores, Helen |date=September 1, 2011 |work=The Philippine Star |access-date=December 31, 2011 |archive-url=https://archive.today/20120909043745/http://www.philstar.com/Article.aspx?articleId=722574&publicationSubCategoryId=63 |archive-date=September 9, 2012 |url-status=dead }}</ref><ref>{{cite news|url=http://www.philstar.com/Article.aspx?articleId=734367&publicationSubCategoryId=63|archive-url=https://archive.today/20120908122541/http://www.philstar.com/Article.aspx?articleId=734367&publicationSubCategoryId=63|url-status=dead|archive-date=September 8, 2012|access-date=October 6, 2011|title=Combined death toll from 'Pedring,' 'Quiel' rises to 76|author=Romero, Alexis|date=October 6, 2011|work=The Philippine Star}}</ref><ref>{{cite news |title=Government will no longer use Sendong to name typhoons |author=Unattributed |url=http://www.sunstar.com.ph/manila/local-news/2011/12/21/government-will-no-longer-use-sendong-name-typhoons-196940 |date=December 23, 2011 |work=Sun Star Manila |access-date=December 26, 2011 |archive-url=https://web.archive.org/web/20130804060329/http://www.sunstar.com.ph/manila/local-news/2011/12/21/government-will-no-longer-use-sendong-name-typhoons-196940 |archive-date=August 4, 2013 |url-status=dead }}</ref> | |||
| {{clear}} | |||
| ==Season effects== | ==Season effects== | ||
| This table lists all |
This table lists all of the tropical cyclones that were monitored during the 2011 Pacific typhoon season. Information on their intensity, duration, name, areas affected, primarily comes from the warning centres while death and damage reports come from either press reports or the relevant national disaster management agency and include any impact that was associated with the system. | ||
| {{Pacific areas affected (Top)}} | |||
| <!-- To help with sorting the winds and the pressure please add a leading 0 for all pressures below a 1000; eg:{{Sort|0990|990 hPa (29.23 inHg)}} as this will help it sort properly.--> | |||
| <center> | |||
| {|class="wikitable sortable" | |||
| !Storm<br>Name !! Dates active !! Storm ]<br>at peak intensity !! Peak 10-min<br>sustained winds !! Pressure<br>hPa !! Areas affected !! Damage<br>(USD) !! Deaths !! class="unsortable"|References | |||
| |- | |- | ||
| | |
| 01W || {{Sort|110401|April 1–4}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| 02W (Amang) || {{Sort|110403|April 3–6}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || Mariana Islands || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| ] || {{Sort|110505|May 5–12}}|| bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|075|{{convert|75|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|0992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, Japan || {{ntsp|34400000||$}} || {{nts|48}} ||<ref name="AereSitRep14"/> | ||
| |- | |- | ||
| | |
| ] || {{Sort|110519|May 19–29}} || bgcolor=#{{storm colour|VITY}}|{{Sort|5|Violent typhoon}} || bgcolor=#{{storm colour|VITY}}|{{Sort|195|{{convert|195|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VITY}}|{{Sort|0920|{{convert|920|hPa|inHg|sigfig=4|abbr=on}}}} || Micronesia, Philippines, Japan, British Columbia || {{ntsp|287000000||$}} || {{nts|17}} ||<ref name="SongdaNDCC15"/>{{zwsp}}<ref name="SongdaOkinawaDamage"/>{{zwsp}}<ref name="SongdaJapanDeaths"/> | ||
| |- | |- | ||
| | |
| TD || {{Sort|110531|May 31 – June 1}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| ] || {{Sort|110608|June 8–11}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|075|{{convert|75|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|0996|{{convert|996|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China || {{ntsp|248000000||$}} || {{nts|28}} ||<ref>{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=June 10, 2011 |access-date=June 10, 2011 |title=NDRRMC Update SitRep No. 5 on Tropical Storm "Dodong" |url=http://www.ndcc.gov.ph/attachments/article/223/NDRRMC%20Update%20Sitrep%20No.%205%20re%20Effects%20of%20TS%20DODONG%2010%20June%202011,%207PM.pdf |url-status=dead |archive-url=https://web.archive.org/web/20111007120015/http://www.ndcc.gov.ph/attachments/article/223/NDRRMC%20Update%20Sitrep%20No.%205%20re%20Effects%20of%20TS%20DODONG%2010%20June%202011%2C%207PM.pdf |archive-date=October 7, 2011 }}</ref> | ||
| |- | |- | ||
| | |
| TD || {{Sort|110614|June 14–15}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || China || {{ntsh|0}} None || {{ntsh|0}} None ||<ref name="Sanvu NCDC">{{cite web|author1=National Weather Service Forecast Office Guam |title=Storm Events Database: Guam: Tropical Storm Sanvu |url=http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=386231 |author2=National Climatic Data Center |publisher=National Oceanic and Atmospheric Administration |archive-url=https://web.archive.org/web/20141220095827/http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=386231 |archive-date=December 20, 2014 |year=2012 |url-status=live }}</ref> | ||
| |- | |- | ||
| | |
| ] || {{Sort|110616|June 16–25}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|75|{{convert|75|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|0985|{{convert|985|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China, Vietnam, Laos, Thailand || {{ntsp|167000000||$}} || {{nts|18}} || | ||
| |- | |- | ||
| | |
| ] || {{Sort|110620|June 20–27}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|110|{{convert|110|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|STS}}|{{Sort|0975|{{convert|975|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China, Japan, Korea || {{ntsp|1240000||$}} || {{nts|11}} ||<ref name="GucholNDRRMCfinal">{{cite web|publisher=National Disaster Risk Reduction and Management Council |date=June 26, 2012 |access-date=August 7, 2012 |title=Final Report re Effects of Southwest Monsoon and Typhoon "Butchoy" (Guchol) |url=http://www.ndrrmc.gov.ph/attachments/article/562/NDRRMC%20Update%20Final%20%20BUTCHOY.pdf }}{{dead link|date=September 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>{{zwsp}}<ref name="JuneRecap">{{cite web|publisher=AON Benfield|date=July 2012|access-date=August 7, 2012|title=June 2012 Global Catastrophe Recap|url=http://thoughtleadership.aonbenfield.com/Documents/201207_if_monthly_cat_recap_june.pdf|archive-date=August 5, 2012|archive-url=https://web.archive.org/web/20120805183147/http://thoughtleadership.aonbenfield.com/Documents/201207_if_monthly_cat_recap_june.pdf|url-status=dead}}</ref> | ||
| |- | |- | ||
| | |
| Goring || {{Sort|110708|July 8–10}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || Japan, Taiwan || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| ] || {{Sort|110711|July 11–24}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|175|{{convert|175|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0935|{{convert|935|hPa|inHg|sigfig=4|abbr=on}}}} || Mariana Islands, Japan || {{ntsp|50000000||$}} || {{nts|5}} ||<ref name="damage">{{cite news|date=August 23, 2011 |archive-date=October 4, 2013 |archive-url=https://web.archive.org/web/20131004232359/http://www.prnewswire.com/news-releases/global-storm-activity-increases-in-july-as-the-atlantic-hurricane-season-approaches-peak-period-according-to-aon-benfield-study-126770338.html |title=Global storm activity increases in July as the Atlantic hurricane season approaches peak period, According to Aon Benfield Study |agency=CPI Financial |url=http://www.prnewswire.com/news-releases/global-storm-activity-increases-in-july-as-the-atlantic-hurricane-season-approaches-peak-period-according-to-aon-benfield-study-126770338.html |access-date=February 25, 2012 |url-status=live }}</ref> | ||
| |- | |- | ||
| | |
| Tokage (Hanna) || {{Sort|110713|July 13–15}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|065|{{convert|65|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None|| {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| TD || {{Sort|110716|July 16–17}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || China || {{ntsh|0}} None|| {{ntsh|0}} || | ||
| |- | |- | ||
| | ] || {{Sort|110724|July 24–31}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|095|{{convert|95|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|STS}}|{{Sort|0985|{{convert|985|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China, Vietnam, Laos, Thailand|| {{ntsp|126300000||$}}|| {{nts|128}} ||<ref>{{cite web|work=National Disaster Risk Reduction and Management Council|publisher=National Disaster Coordinating Council|date=July 28, 2011|access-date=July 28, 2011|title=NDRRMC Update SitRep No. 7 on Tropical Storm "Juaning"|url=http://www.ndcc.gov.ph/attachments/article/251/NDRRMC%20Update%20SitRep%20No.%208%20for%20Tropical%20Storm%20JUANING%20%28Nock-Ten%29.pdf|url-status=dead|archive-url=https://web.archive.org/web/20111007120045/http://www.ndcc.gov.ph/attachments/article/251/NDRRMC%20Update%20SitRep%20No.%208%20for%20Tropical%20Storm%20JUANING%20%28Nock-Ten%29.pdf|archive-date=October 7, 2011}}</ref> | |||
| |'''Tropical Depression''' || {{Sort|14|July 16}} || bgcolor=#{{storm colour|low}}|{{Sort|0|Tropical Depression}} || bgcolor=#{{storm colour|low}}|{{Sort|045|Unknown}} || bgcolor=#{{storm colour|low}}|{{Sort|1002|1002 hPa (29.59 inHg)}} || China || {{sort|00000|None}} || align="right"|{{Sort|0|None}} || | |||
| |- | |- | ||
| | |
| ] || {{Sort|110725|July 25 – August 9}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|175|{{convert|175|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0930|{{convert|930|hPa|inHg|sigfig=4|abbr=on}}}} || Caroline Islands, Philippines, Japan, China, Korea || {{ntsp|480000000||$}} || {{nts|22}} ||<ref>{{cite web|work=National Disaster Risk Reduction and Management Council |publisher=National Disaster Coordinating Council |date=August 4, 2011 |access-date=August 4, 2011 |title=NDRRMC Update SitRep No. 12 on Typhoon "Kabayan" (Muifa) |url=http://ndcc.gov.ph/attachments/article/257/NDRRMC%20Update%20for%20SitRep%20No%2012%20for%20TY%20KABAYAN%204%20Aug%202011%207PM.pdf |url-status=dead |archive-url=https://web.archive.org/web/20111007120637/http://www.ndcc.gov.ph/attachments/article/257/NDRRMC%20Update%20for%20SitRep%20No%2012%20for%20TY%20KABAYAN%204%20Aug%202011%207PM.pdf |archive-date=October 7, 2011 }}</ref> | ||
| |- | |- | ||
| | |
| Lando || {{Sort|110731|July 31 – August 2}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}}|| bgcolor=#{{storm colour|TD}}|{{Sort|1002|{{convert|1002|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines || {{ntsh|0}} None|| {{ntsh|0}} None||<ref name="Lando AD3">{{cite web |title=Severe Weather Bulletin number three, Tropical Cyclone Alert: Tropical Depression "Lando" issued at 11 am, 2011-08-01 |url=http://www.pagasa.dost.gov.ph/wb/tcarchive_lando_files.html |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |archive-url=https://archive.today/20240523155858/https://www.webcitation.org/60bTtkUkM?url=http://dynasmon.fortunecity.com/PAGASA_backup.html |date=August 1, 2011 |archive-date=May 23, 2024 |access-date=December 27, 2011 |url-status=dead }}</ref> | ||
| |- | |- | ||
| | |
| Merbok || {{Sort|110802|August 2–9}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|095|{{convert|95|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|STS}}|{{Sort|0980|{{convert|980|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| TD || {{Sort|110802|August 2–4}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|{{convert|1008|hPa|inHg|sigfig=4|abbr=on}}}} || Japan || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| 13W || {{Sort|110808|August 8–14}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| TD || {{Sort|110808|August 8–10}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|{{convert|1008|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None|| {{ntsh|0}}None || | ||
| |- | |- | ||
| | |
| TD || {{Sort|110820|August 20–25}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None|| {{ntsh|0}}None || | ||
| |- | |- | ||
| | ] || {{Sort|110821|August 21–31}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|185|{{convert|185|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0925|{{convert|925|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, Taiwan, China || {{ntsp|1493630000||$}} || {{nts|38}} || <ref>{{cite web|title=2011 Top 10 Philippine Destructive Tropical Cyclones (PDF)(Report)|url=http://www.ndrrmc.gov.ph/attachments/article/413/2011%20top%2010%20Phil%20Tropical%20cyclones.pdf|publisher=]|access-date=December 31, 2011|archive-date=October 17, 2012|archive-url=https://web.archive.org/web/20121017111510/http://ndrrmc.gov.ph/attachments/article/413/2011%20top%2010%20Phil%20Tropical%20cyclones.pdf|url-status=dead}}</ref>{{zwsp}}<ref>{{cite web|title=Nanmadol causes est. $200 TO $500 million in Taiwan|url=http://www.eqecat.com/catwatch/nanmadol-causes-300-to-500-million-damage-talas-hit-japan-cat-2-2011-08-30/|publisher=EQECAT|access-date=September 2, 2011}}</ref>{{zwsp}}<ref>{{cite web|title="南玛都"致福建经济损失5.32亿元 无人员伤亡|url=http://news.sohu.com/20110901/n317982623.shtml|publisher=China Press|access-date=September 1, 2011}}</ref> | |||
| |'''Tropical Depression''' || {{Sort|22|August 20 – 25}} || bgcolor=#{{storm colour|low}}|{{Sort|0|Tropical Depression}} || bgcolor=#{{storm colour|low}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|low}}|{{Sort|1002|1002 hPa (29.59 inHg)}} || None || {{sort|00000|None}} || align="right"|{{Sort|0|None}} || | |||
| |- | |- | ||
| | |
| ] || {{Sort|110823|August 23 – September 5}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|095|{{convert|95|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|STS}}|{{Sort|0970|{{convert|970|hPa|inHg|sigfig=4|abbr=on}}}} || Japan || {{ntsp|600000000||$}} || {{nts|82}} ||<ref name="dead and missing">{{cite web|title=台風12号による被害状況及び消防機関の活動状況等について(第14報)|url=http://www.fdma.go.jp/bn/data/台風12号による被害状況について（第14報）.pdf|publisher=Fire and Disaster Management Agency|access-date=October 3, 2011|archive-url=https://web.archive.org/web/20180918032922/http://www.fdma.go.jp/bn/data/%E5%8F%B0%E9%A2%A812%E5%8F%B7%E3%81%AB%E3%82%88%E3%82%8B%E8%A2%AB%E5%AE%B3%E7%8A%B6%E6%B3%81%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%EF%BC%88%E7%AC%AC14%E5%A0%B1%EF%BC%89.pdf|archive-date=September 18, 2018|url-status=dead}}</ref> | ||
| |- | |- | ||
| | |
| Noru || {{Sort|110902|September 2–6}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|075|{{convert|75|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|0990|{{convert|990|hPa|inHg|sigfig=4|abbr=on}}}} || None || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |- | ||
| | |
| Kulap (Nonoy) || {{Sort|110906|September 6–11}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|065|{{convert|65|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || Japan, Korea || {{ntsh|0}} None || {{ntsh|0}} None || | ||
| |- | |||
| |-class="unsortable" | |||
| | ] || {{Sort|110908|September 8–22}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|155|{{convert|155|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0940|{{convert|940|hPa|inHg|sigfig=4|abbr=on}}}} || Japan || {{ntsp|1200000000||$}} || {{nts|13}} ||<ref>{{cite news|newspaper=Insurance News|author=Lai, Iris|date=December 15, 2011|url=http://insurancenewsnet.com/article.aspx?id=313927|access-date=December 18, 2011|title=Japanese Nonlife Insurers Report 1.3 Trillion Yen in Claims Related to Quake, Typhoons}}</ref> | |||
| |colspan=25; align=center|'''Season Aggregates''' | |||
| |- | |||
| |-class="unsortable" | |||
| | TD || {{Sort|110913|September 13–15}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}} |{{Sort|040|Not specified}}|| bgcolor=#{{storm colour|TD}}|{{Sort|1002|{{convert|1002|hPa|inHg|sigfig=4|abbr=on}}}} || Taiwan || {{ntsh|0}} None || {{ntsh|0}} None || | |||
| | '''Total Depressions: 25''' || April 1 – Still active || || 195 km/h (120 mph) || 920 hPa (27.17 inHg) || || ${{Formatprice|928560000}} ||align="right"| 310 || | |||
| | |
|- | ||
| | Sonca || {{Sort|110914|September 14–20}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}} || bgcolor=#{{storm colour|TY}}|{{Sort|130|{{convert|130|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TY}}|{{Sort|0970|{{convert|970|hPa|inHg|sigfig=4|abbr=on}}}} ||None || {{ntsh|0}} None || {{ntsh|0}} None || | |||
| </center> | |||
| |- | |||
| | ] || {{Sort|110923|September 23–30}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}} || bgcolor=#{{storm colour|TY}}|{{Sort|150|{{convert|150|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TY}}|{{Sort|0950|{{convert|950|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China, Vietnam || {{ntsp|2119000000||$}} || {{nts|98}} || <ref>{{cite report|access-date=2011-12-31|publisher=National Disaster Risk Reduction and Management Center|title=Situational Report No.26 re Typhoon "Pedring" (Nesat)|archive-date=March 26, 2012|author=Ramos, Benito T.|url-status=dead|date=2011-10-11|url=http://www.ndrrmc.gov.ph/attachments/article/306/NDRRMC%20Update%20SitRep%20No.26%20re%20Effects%20of%20Typhoon%20PEDRING%20%28NESAT%29%20as%20of%2011OCT2011,%206AM.pdf|archive-url=https://www.webcitation.org/66RU0vwsx?url=http://www.ndrrmc.gov.ph/attachments/article/306/NDRRMC%20Update%20SitRep%20No.26%20re%20Effects%20of%20Typhoon%20PEDRING%20%28NESAT%29%20as%20of%2011OCT2011%2C%206AM.pdf}}</ref>{{zwsp}}<ref>{{cite report|access-date=2011-12-31|publisher=National Disaster Risk Reduction and Management Center|url-status=live|archive-date=2012-10-17|date=2011-12-30|url=http://www.ndrrmc.gov.ph/attachments/article/413/2011%20top%2010%20Phil%20Tropical%20cyclones.pdf|title=2011 Top 10 Philippine Destructive Tropical Cyclones|archive-url=https://web.archive.org/web/20121017111510/http://ndrrmc.gov.ph/attachments/article/413/2011%20top%2010%20Phil%20Tropical%20cyclones.pdf|author=Ramos, Benito T.}}</ref>{{zwsp}}<ref>{{cite web|title="纳沙"致广东省直接经济损失增至28.6亿元|url=http://www.chinanews.com/gn/2011/10-01/3367288.shtml|agency=China Press|access-date=October 1, 2011}}</ref>{{zwsp}}<ref>{{cite web|title=台风给海南造成严重经济损失 全省转移45万余人|url=https://news.qq.com/a/20110930/001154.htm|agency=China Press|access-date=September 30, 2011}}</ref>{{zwsp}}<ref>{{cite web|title="纳沙"致广西306万人受灾 4人死亡1人失踪|url=https://news.qq.com/a/20111003/000605.htm|agency=China Press|access-date=October 3, 2011}}</ref> | |||
| |- | |||
| | Haitang || {{Sort|110924|September 24–27}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|065|{{convert|65|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|0996|{{convert|996|hPa|inHg|sigfig=4|abbr=on}}}} || China, Vietnam, Laos || {{ntsp|20000000||$}} || {{nts|25}} || | |||
| |- | |||
| | ] || {{Sort|110926|September 26 – October 5}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|175|{{convert|175|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0935|{{convert|935|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines, China, Vietnam || {{ntsp|250000000||$}} || {{nts|18}} ||<ref>{{cite web|title=Nalgae leaves 18 dead in the Philippines |url=http://blackteacentral.com/nalgae-leaves-18-dead-in-the-philippines/ |publisher=Protect the Environment |access-date=June 4, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120416103934/http://blackteacentral.com/nalgae-leaves-18-dead-in-the-philippines/ |archive-date=April 16, 2012 }}</ref> | |||
| |- | |||
| | Banyan (Ramon) || {{Sort|111009|October 9–14}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|065|{{convert|65|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TS}}|{{Sort|1002|{{convert|1002|hPa|inHg|sigfig=4|abbr=on}}}} || Palau, Philippines|| {{ntsp|2100000||$}} || {{nts|10}} || | |||
| |- | |||
| | TD || {{Sort|111010|October 10–13}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1006|{{convert|1006|hPa|inHg|sigfig=4|abbr=on}}}} || China, Vietnam ||{{ntsh|0}} None|| {{ntsh|0}} None || | |||
| |- | |||
| | 24W || {{Sort|111107|November 7–10}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None ||{{ntsh|0}} None|| {{ntsh|0}} None || | |||
| |- | |||
| | 25W || {{Sort|111204|December 4–5}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1006|{{convert|1006|hPa|inHg|sigfig=4|abbr=on}}}} || None ||{{ntsh|0}} None|| {{ntsh|0}} None || | |||
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| | 26W || {{Sort|111210|December 10–14}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || Philippines ||{{ntsh|0}} None|| {{nts|4}}|| | |||
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| | ] || {{Sort|111213|December 13–19}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|095|{{convert|95|km/h|mph|abbr=on}}}} || bgcolor=#{{storm colour|STS}}|{{Sort|992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || Caroline Islands, Philippines ||{{ntsp|97800000||$}} || {{nts|2546}} ||<ref name="washi official"/><ref>{{cite web|title=Tropical Cyclone Logs: Sendong (Washi) 2011|year=2011|publisher=Typhoon 2000|access-date=December 31, 2011|author=Padua, David M|url=http://www.typhoon2000.ph/stormarchives/2011/stormlogs/19sendong11_log.htm}}</ref>{{zwsp}}<ref>{{cite report|author=Ramos, Benito T |publisher=National Disaster Risk Reduction and Management Center |access-date=February 24, 2012 |url=http://www.ndrrmc.gov.ph/attachments/article/358/Final%20Report%20re%20TS%20Sendong,%2015%20-%2018%20December%202011.pdf |title=Final Report on the Effects and Emergency Management re Tropical Storm "Sendong" (Washi) |url-status=dead |archive-url=https://web.archive.org/web/20130116082551/http://www.ndrrmc.gov.ph/attachments/article/358/Final%20Report%20re%20TS%20Sendong,%2015%20-%2018%20December%202011.pdf |archive-date=January 16, 2013 }}</ref> | |||
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| | TD || {{Sort|111224|December 24}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1002|{{convert|1002|hPa|inHg|sigfig=4|abbr=on}}}} || None ||{{ntsh|0}} None|| {{ntsh|0}} None || | |||
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| | TD || {{Sort|111231|December 31, 2011 – January 1, 2012}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|040|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|{{convert|1008|hPa|inHg|sigfig=4|abbr=on}}}} || Malaysia ||{{ntsh|0}} None|| {{ntsh|0}} None || | |||
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| {{TC Areas affected (Bottom)|TC's=39 systems|dates=April 1, 2011 –<br />January 1, 2012|winds={{convert|195|km/h|mph|abbr=on}}|pres={{convert|920|hPa|inHg|sigfig=4|abbr=on}}|damage={{ntsp|7176470000||$}}|deaths=3,111|Refs=}} | |||
| ==See also== | ==See also== | ||
| {{Portal|Tropical cyclones}} | {{Portal|Tropical cyclones}} | ||
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| * South-West Indian Ocean cyclone seasons: ], ] | * South-West Indian Ocean cyclone seasons: ], ] | ||
| * Australian region cyclone seasons: ], ] | * Australian region cyclone seasons: ], ] | ||
| * South Pacific cyclone seasons: ], ] | * South Pacific cyclone seasons: ], ] | ||
| * ] | |||
| ==Notes== | ==Notes== | ||
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| ==References== | ==References== | ||
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| ==External links== | ==External links== | ||
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| {{2011 Pacific typhoon season buttons}} | {{2011 Pacific typhoon season buttons}} | ||
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| {{Tropical cyclone season|2011}} | |||
| {{DEFAULTSORT:2011 Pacific Typhoon Season}} | {{DEFAULTSORT:2011 Pacific Typhoon Season}} | ||
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Latest revision as of 10:34, 3 January 2025
| 2011 Pacific typhoon season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | April 1, 2011 |
| Last system dissipated | January 1, 2012 |
| Strongest storm | |
| Name | Songda |
| • Maximum winds | 195 km/h (120 mph) (10-minute sustained) |
| • Lowest pressure | 920 hPa (mbar) |
| Seasonal statistics | |
| Total depressions | 39 |
| Total storms | 21 |
| Typhoons | 8 |
| Super typhoons | 4 (unofficial) |
| Total fatalities | 3,111 total |
| Total damage | $7.68 billion (2011 USD) |
| Related articles | |
| Pacific typhoon seasons 2009, 2010, 2011, 2012, 2013 | |
The 2011 Pacific typhoon season was a below average season that produced a total of 21 named storms, 8 typhoons, and four super typhoons. This season was much more active than the previous season, although both seasons were below the Pacific typhoon average of 26. The season ran throughout 2011, though most tropical cyclone tend to develop between May and October. The season's first named storm, Aere, developed on May 7 while the season's last named storm, Washi dissipated on December 19.
The season was also much deadlier and destructive than the previous season. Typhoon Muifa affected many countries during August. Tropical Storm Talas and Typhoon Roke made landfall over in Japan and were the most destructive since 2009. Typhoon Nesat was the most powerful to strike China since 2005. Tropical Storm Washi, a late but weak cyclone, affected southern Philippines and killed 2546 people.
The scope of this article is limited to the Pacific Ocean to the north of the equator between 100th meridian east and the 180th meridian. Within the Northwestern Pacific Ocean, there are two separate agencies who assign names to tropical cyclones which can often result in a cyclone having two names. The Japan Meteorological Agency will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 km/h (40 mph) anywhere in the basin. Whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had a name assigned to it by the Japan Meteorological Agency. Tropical depressions that are monitored by the United States' Joint Typhoon Warning Center are given a number with a "W" suffix.
Seasonal forecasts
| TSR forecasts Date |
Tropical storms |
Total Typhoons |
Intense TCs |
ACE | Ref |
|---|---|---|---|---|---|
| Average (1965–2010) | 26.3 | 16.4 | 8.5 | 295 | |
| March 8, 2011 | 27.8 | 17.5 | 7.8 | 275 | |
| May 5, 2011 | 28.0 | 17.7 | 7.6 | 266 | |
| July 4, 2011 | 28.3 | 18.1 | 8.4 | 294 | |
| August 5, 2011 | 28.2 | 17.9 | 8.0 | 281 | |
| Other forecasts Date |
Forecast Center |
Period | Systems | Ref | |
| January 2011 | PAGASA | January 1 – December 31 | 20–23 tropical cyclones | ||
| June 30, 2011 | CWB | January 1 – December 31 | 22–26 tropical storms | ||
| Forecast Center |
Tropical cyclones |
Tropical storms |
Typhoons | Ref | |
| Actual activity: | JMA | 38 | 21 | 8 | |
| Actual activity: | JTWC | 27 | 18 | 10 | |
| Actual activity: | PAGASA | 19 | 14 | 6 | |
During each season, several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country. These agencies include the Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC), of the City University of Hong Kong, the Tropical Storm Risk (TSR) Consortium of the University College London, and the Taiwan's Central Weather Bureau.
During January 2011, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) predicted that between twenty and twenty-three tropical cyclones were likely to develop and/or enter the Philippine area of responsibility during 2011. On March 20 the Hong Kong Observatory, predicted that the typhoon season in Hong Kong would be near to above normal with six to nine tropical cyclones passing within 500 km (310 mi) of the territory against an average of around 6. On March 30, the TSR Consortium released their first forecast of the season and predicted that the basin would see a near average season with 27.8 tropical storms, 17.5 typhoons, 7.8 "intense" typhoons and an ACE index of about 275. In early April, the China Meteorological Administration (CMA) predicted that between 24 and 26 tropical storms would develop or move into the basin during the year, which it noted was higher than the previous total of 14. They also predicted that between seven and nine tropical storms would make landfall on China, with the first landing taking place before June 29 and the last landing taking place after October 7. On April 26, the Thai Meteorological Department predicted that two tropical storms would affect Thailand during 2011, with one affecting Upper Thailand during August or September, while one was expected to move through Southern Thailand during October or November.
During May within its first outlook for the year, the GCACIC predicted that the season would be near average with 31 tropical cyclones, 27 tropical storms and 17 typhoons developing during the season. They also predicted that seven tropical cyclones would make landfall on Southern China, between May and December, compared with an average of five while predicting that six tropical cyclones during the whole year compared to an average of four tropical cyclones. TSR revised its initial prediction during May and subsequently predicted that 28.0 tropical storms, 17.7 typhoons, 7.6 "intense" typhoons and an ACE index of about 266. In late June after a near-normal start to the season Taiwan's Central Weather Bureau predicted that the season, would be near average of 25.7 with 22–26 tropical storms occurring over the basin during 2011. Between three and five of the systems were predicted to affect Taiwan, compared to an average of around 3.6. Within its July forecast update, the GCACIC predicted that seven tropical cyclones would make landfall on Southern China, between July and December compared to an average of four and that there would now be 16 typhoons due to the strength of the India-Burma trough. They also predicted that seven tropical cyclones would pass within 100 km (62 mi) of the Korean Peninsula or Japan, during July and December compared to an average of around three. Within its July update, TSR predicted that the ACE index would be about 194, after raising its prediction for the number of tropical storms to 28.0, typhoons to 18.1 and intense typhoons to 8.4. On August 4, TSR subsequently slightly revised these predictions within its final update for 2011 to 28.2 tropical storms, 17.9 typhoons, 8.0 "intense" typhoons and an ACE index of about 281.
Seasonal summary
See also: Timeline of the 2011 Pacific typhoon season
During April two tropical depressions developed but they failed to intensify into tropical storms. Tropical Storm Aere (Bebeng) then developed on May 5, and after causing PHP 2.25 billion in damage to Northeastern Luzon and Eastern Visayas, the name Bebeng was retired by PAGASA. The second tropical storm of the season then developed on May 19, and affected the Philippines, Taiwan and Japan before becoming extratropical to the east of Japan.
After Tropical Storm Banyan dissipated during October 14, no tropical storms or typhoons were observed within the basin until Tropical Depression 27W developed into Tropical Storm Washi during December 15, due to high vertical windshear and a strong northeast monsoon.
Systems
Tropical Depression 01W
| Tropical depression (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | April 1 – April 4 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 1004 hPa (mbar) |
On April 1, the JMA reported that a tropical depression had developed within an area of moderate vertical wind shear about 510 km (315 mi) to the southeast of Ho Chi Minh City in Southern Vietnam. Over the next day, the system gradually developed further, before the JTWC initiated advisories on the system and designated it as Tropical Depression 01W. However, within hours of this, the depression became devoid of convection as wind shear buffeted the system. This prevented the cyclone from intensifying beyond depression status as it remained nearly stationary. The JMA continued to monitor the system as a tropical depression for another day before issuing their last warning on the system. According to the Vietnamese national television's brief reports on the storm the day after its dissipated, some of its remnants has travelled towards the mainland and combine with other disturbances from the Bay of Bengal, created severe heavy rainings which affects parts of the Southeast region of the country, with the Tan Son Nhat airport being delayed up to hours.
Tropical Depression 02W (Amang)
| Tropical depression (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | April 3 – April 6 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 1000 hPa (mbar) |
On March 30, the JMA began monitoring an area of low pressure located southwest of Yap. By April 2, the system developed a low-level circulation, though convection appeared disorganized. Exhibiting good outflow within a region of weak wind shear, the low was anticipated to develop further over the following several days as it drifted west-northwestward. After briefly stalling early on April 3, the storm turned towards the east. Additionally, the JMA considered the system sufficiently organized to be declared a tropical depression. As the system was located to the west of 135°E, PAGASA began issuing advisories on the depression as well, assigning it the name "Amang". Tracking northeastward, the depression eventually developed enough convection to be declared Tropical Depression 02W by the JTWC on April 4. However, this was expected to be brief as a decaying frontal boundary approached from the west and prompted the system to undergo an extratropical transition. This intensification prompted the National Weather Service (NWS) in Tiyan, Guam to issue a tropical storm warning for the islands of Agrihan, Pagan and Alamagan. Interacting with the front and high wind shear, the system became partially exposed and elongated as it moved over cooler waters. Early on April 6, the JTWC issued their final advisory on the depression as it began to dissipate over open waters.
Tropical Storm Aere (Bebeng)
Main article: Tropical Storm Aere (2011)| Tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | May 6 – May 12 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 992 hPa (mbar) |
On May 3, the JTWC started to monitor a tropical disturbance that had developed within a monsoon trough about 140 km (87 mi) to the west of Palau. At this time the disturbances low level circulation center was weak and unorganized, while a minimal amount of deep convection was observed around the system. Over the next couple of days the depression gradually developed further in an area of low vertical wind shear before it was declared a tropical depression by the JMA and the JTWC during May 6. In the same evening, PAGASA upgraded the low pressure into a tropical depression and assigned its local name 'Bebeng'. On the afternoon of May 7, JMA upgraded the depression to a tropical storm and assigned the name 'Aere'. During the early morning of May 12, the JMA downgraded Aere to a tropical depression while south of Kyushu Island as it became a weak extratropical cyclone. Its extratropical remnants finally dissipated on May 15.
Throughout the Philippines, multiple agencies activated their emergency plans as the storm approached. The Armed Forces of the Philippines, the Philippine National Police, and the Philippine Coast Guard were all placed on standby to deploy to areas struck by Aere once the storm passed. Several ports were affected by the storm, stranding 1,379 passengers by the afternoon of May 7. According to the National Disaster Risk Reduction and Management Council, at least 35 people have been killed and two more are missing as a result of Aere. Agricultural losses are estimated at PHP1.37 billion (US$31.7 million). Widespread flooding and landslides damaged homes, blocked off roads and severed communications. In Catarman, Northern Samar, 377.4 mm (14.86 in) of rain fell in just 24 hours, resulted in significant flash flooding.
Typhoon Songda (Chedeng)
Main article: Typhoon Songda (2011)| Violent typhoon (JMA) | |
| Category 5 super typhoon (SSHWS) | |
  | |
| Duration | May 19 – May 29 |
|---|---|
| Peak intensity | 195 km/h (120 mph) (10-min); 920 hPa (mbar) |
A weak non-tropical system formed within the Intertropical Convergence Zone on May 17, as it moved in a westward direction. On May 19, the JTWC reported that an area of low pressure had persisted about 510 km (320 mi) to the southeast of Yap. As the system moved towards the northwest under the influence of a subtropical ridge of high pressure, it rapidly consolidated in an area of light to moderate vertical wind shear. The JMA then started to monitor the system as a tropical depression later that day, before the JTWC designated it as Tropical Depression 04W early on May 20. The JTWC then reported later that day that the depression had intensified into a tropical storm with wind speeds of 65 km/h (40 mph), however, it later reported that it had overestimated the wind speeds and consequently lowered the storm's status to a tropical depression, based on observations from Yap island. Late on May 21, both the JMA and the JTWC reported that the depression had now become a tropical storm with the JMA naming it as Songda. Over the next couple of days, the system gradually intensified further while moving northwest into PAGASA's area of responsibility. PAGASA named it as Chedeng. At 1200 UTC on May 24, the JTWC reported that Songda had intensified into a typhoon. 12 hours later, the JMA followed suit while the system was located about 800 km (500 mi) to the southeast of Manila in the Philippines. It rapidly intensified into a Category 5 typhoon. On the afternoon of May 29, Songda became extratropical south of Shikoku Island. The extratropical remnants of Sonda later crossed the International Date Line, which was later absorbed by another extratropical cyclone on June 4, and later dissipated completely over Alaska.
Although Songda remained offshore, heavy rains within the typhoon's outer bands impacted the Philippines, causing significant flash flooding and landslides. Four fatalities are attributed to the system there. Further north, Okinawa experienced intense wind gusts, measured up to 198 km/h (123 mph), along with torrential rain. Extensive damage took place across the area with losses reaching ¥23.2 billion ($287 million); however, there were no fatalities. As it became extratropical, Songda brought heavy rains from Kyushu to eastern Honshu, causing significant flooding. At least 13 people were killed in the country and an estimated 400,000 had to be evacuated around Tokyo alone.
Tropical Storm Sarika (Dodong)
Main article: Tropical Storm Sarika (2011)| Tropical storm (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | June 8 – June 11 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 996 hPa (mbar) |
On early June 8, an area of low pressure formed about 10 km (6.2 mi) west of Cebu City, Philippines. As it moved towards the Mindoro Strait the JMA and JTWC began to monitor the system. In the early morning hours of June 9, the Philippines' PAGASA upgraded the system to a tropical depression and reported the storm center to be about 450 km (280 mi) west of Dagupan in the Philippines. The next day, the JMA and JTWC upgraded the tropical depression into a tropical storm, with the JMA naming it Sarika. During the morning of June 11, the JTWC downgraded Sarika to a tropical depression after making landfall in Shantou, China. The JTWC soon issued their final advisory on Sarika. Sarika made landfall on mainland China with winds of 75 km/h (45 mph).
As a result of the storm, 23 people were killed in Xianning, and ten more were declared missing. Damages from Sarika are estimated at $248 million.
Tropical Storm Haima (Egay)
| Tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
.jpg)  | |
| Duration | June 16 – June 25 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 985 hPa (mbar) |
Two tropical disturbances formed in an area of convection and moderate vertical wind shear east of Mindanao, Philippines on June 13. Both of them started to interact with each other and the other one absorbed the moisture of the other disturbance. On June 15, the JTWC started to monitor an area of disturbed weather within that disturbance that was located about 1,350 km (840 mi), to the southeast of Manila, Philippines. Over the next couple of days the system gradually developed further, before late on June 16, the JMA, JTWC and PAGASA, all reported that the system had developed into a tropical depression, with PAGASA naming it as Egay. Egay continued to develop during June 17, as it moved towards the northeast, and on June 18, the JTWC reported that Egay had intensified into a tropical storm. Fluctuations in intensity occurred over the next several days, before the JMA reported that the system had strengthened into a tropical storm on June 22, naming it Haima. The JTWC also followed suit, by upgrading it to a tropical storm again.
During the evening of June 23, the JTWC downgraded Haima to a tropical depression after making landfall in Zhanjiang, Guangdong, China but upgraded it to a tropical storm again on June 24,. Early on June 25, Haima became a tropical depression after moving inland in Vietnam. As it made landfall over Hanoi, Vietnam, the JTWC and the Hong Kong Observatory downgraded Haima to a low-pressure area.
Severe Tropical Storm Meari (Falcon)
| Severe tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | June 20 – June 27 |
|---|---|
| Peak intensity | 110 km/h (70 mph) (10-min); 975 hPa (mbar) |
Early on June 20, an area of low pressure about 760 km (470 mi), east of the Philippines began to be monitored by both the JTWC and JMA. That evening, the JTWC issued a Tropical Cyclone Formation Alert. Soon afterwards, PAGASA upgraded the system into a tropical depression, naming it as "Falcon". At the time of the upgrade, Falcon was located about 1,000 km (620 mi), east northeast of Cebu City. During the evening of June 21, the JTWC also reported that Falcon had strengthened into a tropical depression. On June 22, both the JTWC and the JMA upgraded Falcon into a tropical storm, and the JMA named it Meari. Meari left the Philippines with 2 deaths and 5 people missing. On the afternoon on June 24, the JMA upgraded Meari to a severe tropical storm as it passed Okinawa, Japan.
On June 26, Meari rapidly moved to the Yellow Sea but slowly passed Weihai, Shandong, China, and then the JMA downgraded Meari to a tropical storm on the same day. On June 27, the JTWC downgraded Meari to a tropical depression before it made landfall on North Korea, and the JMA reported that Meari became a low-pressure area later.
Heavy rains from the storm's outer bands triggered significant flooding and landslides in South Korea. At least nine people were killed and three others were reported missing across the country. In North Korea, heavy rains from the storm caused widespread flooding and damage. At least 160 homes were destroyed and 50,000 hectares of crops submerged. Several reports of confirmed fatalities arose but no details on how many were given to news agencies.
Tropical Depression Goring
| Tropical depression (JMA) | |
  | |
| Duration | July 8 – July 10 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); 998 hPa (mbar) |
Late on July 8, an area of low pressure formed about 300 km (190 mi) east of Aurora. The center was 460 km (290 mi) north of Basco, Batanes. On the morning of July 9, JMA upgraded the system to a tropical depression. It was located 450 km (280 mi) northeast of Cagayan. In the afternoon, PAGASA upgraded the low-pressure area into a tropical depression and named it Goring. After making landfall on Fujian, China, it dissipated on the evening on July 10. However, the JMA classified the system as a tropical depression until the evening of July 10.
Typhoon Ma-on (Ineng)
Main article: Typhoon Ma-on (2011)| Very strong typhoon (JMA) | |
| Category 4 typhoon (SSHWS) | |
  | |
| Duration | July 11 – July 24 |
|---|---|
| Peak intensity | 175 km/h (110 mph) (10-min); 935 hPa (mbar) |
An area of convection spawned a small area of low pressure on the morning of July 9. It became a tropical disturbance as it passed over the warm waters of the Pacific Ocean. On July 11, both the JMA and JTWC upgraded the tropical disturbance to a tropical depression which was located near Minamitorishima. On July 12, both the JMA and JTWC upgraded the system to a tropical storm and named it Ma-on. Early on July 13, the JMA upgraded Ma-on to a severe tropical storm and later that day strengthened into a typhoon. After absorbing Tokage, Ma-on reached its peak intensity on July 16. The PAGASA named it Ineng on July 17.
While Ma-on was affecting Japan, the JTWC downgraded it to a tropical storm in the evening on July 19, before making landfall on Tokushima later in the day. The JMA downgraded Ma-on to a severe tropical storm after it made landfall in Wakayama early on July 20. The JTWC downgraded Ma-on to a tropical depression on July 21, and discontinued advisories the following day. The JMA downgraded Ma-on to a tropical storm early on July 23 and transitioned into an extratropical cyclone east of the Tōhoku region the next day.
Tropical Storm Tokage (Hanna)
| Tropical storm (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | July 13 – July 15 |
|---|---|
| Peak intensity | 65 km/h (40 mph) (10-min); 1000 hPa (mbar) |
On July 11, the JTWC started to monitor a tropical disturbance that had developed within a poorly organized monsoon trough about 1,000 kilometers (620 mi) to the northwest of Hagatna, Guam. Over the next couple of days, the disturbance moved towards the west and despite the system being in an area of low vertical wind shear, deep convection surrounding the system struggled to organize around the disturbances low level circulation center. However, by 06:00 UTC on July 13, it had organized enough for the JMA to declare the disturbance a tropical depression. Over the next two days, the system continued to move towards the west and gradually consolidated further. The JMA then named the system as Tokage, as it had developed into a tropical storm and reached its 10-minute peak wind speeds of 65 km/h (40 mph). PAGASA then initiated advisories on the system and named it Hanna, before the JTWC designated the system as Tropical Depression 09W and initiated advisories on the system, while it was at its 1-minute peak wind speeds of 55 km/h (35 mph). However, by this time Tokage was already interacting with Typhoon Ma-on, with Ma-on's outflow exposing Tokage's low level circulation center, and displacing convection to the west. The JMA, PAGASA and the JTWC then issued their final advisories on the system later that day as the remnants of Tokage was absorbed into Ma-on, due to the Fujiwhara effect late on July 15.
Severe Tropical Storm Nock-ten (Juaning)
Main article: Tropical Storm Nock-ten (2011) See also: 2011 Thailand floods| Severe tropical storm (JMA) | |
| Category 1 typhoon (SSHWS) | |
  | |
| Duration | July 24 – July 31 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 985 hPa (mbar) |
Early on July 22, an area of low pressure formed to the east of Philippines. The system gradually drifted west over the next few days and late on July 24, the JTWC started monitoring the system as a Tropical Depression. Early the next day, the JMA upgraded the area of low pressure into a Tropical Depression. A few hours later, the PAGASA started monitoring the tropical depression and named it 'Juaning'. The system continued to drift westwards and strengthened rapidly, that on midnight, that day, the JMA further upgraded the system into a Tropical Storm, naming it Nock-Ten. Early on July 27, the JMA reported that Nock-ten continued to strengthen and upgraded it into a Severe Tropical Storm. A few hours later, the JTWC reported that Nock-ten rapidly intensified to a category 1 typhoon and made its landfall over northern Aurora (province) and started weakening. Later the same day, the JMA reported that Nock-ten has exited the Luzon island at Candon maintaining severe tropical storm strength. However, overnight, the storm rapidly weakened and the JMA downgraded it into a minor tropical storm the next day. However, on July 29, the storm gradually regained strength and approached south China coast at Qionghai, China. Later that day, the storm strengthened over land and headed north towards Hainan's provincial capital region Haikou. Over the next day, the storm drifted to the west and made landfall over Northern Vietnam. The storm weakened rapidly and at midnight that day, the JMA, issuing their final warning on the system, downgraded it into a tropical low.
The provinces of Albay and Camarines were reported to be completely flooded by the rain. Minor damage to rice crops was reported. Additional heavy rain was expected throughout the day while Nock-ten moved into the South China Sea. The number of missing was also pushed up to 31 after 25 crewmembers of a fishing boat were reported missing when their fishing boat was caught in the storm off Masbate. Nock-ten suspended all classes in Luzon from pre-school to college levels on July 26 and 27. In Northern Luzon, Nock-ten poured down heavy rainfall becoming widespread flooding in the area. The national roads were impassable and landslides were also reported. About 26 domestic flights were cancelled from July 26 to 27 due to heavy rains and strong winds.
Typhoon Muifa (Kabayan)
Main article: Typhoon Muifa (2011)| Very strong typhoon (JMA) | |
| Category 5 super typhoon (SSHWS) | |
  | |
| Duration | July 27 – August 9 |
|---|---|
| Peak intensity | 175 km/h (110 mph) (10-min); 930 hPa (mbar) |
Late on July 23, an area of low pressure formed to the southeast of Chuuk. the system gradually drifted to the west and on July 25, the JTWC upgraded the low-pressure area to a tropical depression. At that time, it was located approximately 505 nautical miles (935 km; 581 mi) to the west of Guam. At midnight, that day, the JMA started monitoring the system as a tropical depression. Early on July 28, the JTWC upgraded the system into a Tropical Storm. A few hours later, the JMA too upgraded the system to a tropical storm, naming it Muifa. Soon, the storm moved into the Philippine area of responsibility and the PAGASA named it Kabayan. The storm gradually drifted north over the next day maintaining strength. On the night of July 29, Muifa was upgraded into a severe tropical storm. Overnight, the storm strengthened rapidly and was upgraded into a typhoon the next morning. The storm strengthened so rapidly, and the JTWC reported that the storm's peak winds were reaching 140 knots (260 km/h; 160 mph) (1-min sustained), as it strengthened into a Category 5 Typhoon. However, the typhoon couldn't maintain Category 5 strength for a long time. According to the JTWC, On July 31, the typhoon interacted with an upper-level trough and weakened into a Category 4 typhoon. The system gradually moved north, then turned west and drifted towards Okinawa, before turning northwest again, when it was finally downgraded to a tropical storm by the JTWC. Soon afterwards, the JMA too downgraded Muifa to a Severe Tropical storm. After weakening to a tropical storm, Muifa made landfall at the estuary of the Yalu River on August 8, and the JTWC issued the final warning. Early on August 9, Muifa weakened to a tropical depression over northeast China and became a low-pressure area later.
Muifa killed 2 men, as their boat was capsized in the vicinity of Hagonoy, Bulacan and Pampanga Delta. Due to the southwest monsoon enhanced by Muifa, it caused heavy rains in several parts of Luzon including Metro Manila. Early on August 2, Malacañang Palace suspended government offices and pre-school to college level in NCR. Nearby provinces like Calabarzon (Region IV-A) also suspended their classes. In Marikina, 200 residents or 31 families living in communities along the Marikina River sought shelter in evacuation centers.
Tropical Depression Lando
| Tropical depression (JMA) | |
  | |
| Duration | July 31 – August 2 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); 1002 hPa (mbar) |
On July 31, the JMA reported that a tropical depression had developed about 500 km (310 mi) to the north west of Manila in the Philippines. However, because of the outflow from Typhoon Mufia, the deep convection that surrounded the system was being sheared off to the west of the systems low level circulation center. During that day the depression moved towards the north slowly, before PAGASA named it as Lando, however during the next day they reported that the depression had weakened into a low-pressure area and released their final advisory on it. After PAGASA issued their final advisory, the JMA continued to monitor the depression for another 24 hours before late on August 2, the JMA dropped the system from their advisories as it dissipated.
Severe Tropical Storm Merbok
| Severe tropical storm (JMA) | |
| Category 1 typhoon (SSHWS) | |
  | |
| Duration | August 2 – August 9 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 980 hPa (mbar) |
Early on August 2, the JMA upgraded an area of low pressure near Wake Island to a tropical depression. The system intensified rapidly and just six hours later, the JMA upgraded the system to a tropical storm, naming it Merbok. Soon, the JTWC started monitoring the system as a tropical depression and upgraded it to a tropical storm later. Merbok began to move westward slowly, but soon afterwards, it turned northwest and gradually drifted in that direction. Late on August 5, the JMA upgraded Merbok into a severe tropical storm. Early on August 6, the JTWC upgraded Merbok into a Category 1 typhoon 960 mi (1,540 km) east-southeast of Tokyo, Japan. Early the next day, the storm's winds reached a peak of 90 mph (140 km/h) (1-min sustained). Later that day, the system was caught in moderate vertical wind shear and started weakening. On August 8, the system started accelerating northwards at a speed of 23 mph (37 km/h) and convection gradually diminished due to colder sea surface temperatures and unfavorable conditions. As a result, the JMA reported that Merbok had weakened into a tropical storm. Later on that day, the system started showing extratropical characteristics as the convection near the eye dissipated rapidly. Thus, the JTWC issued their final warning on the system reporting that the system was no longer tropical. Later, the JMA, also noting that Merbok had lost its tropical characteristics, issued their final advisory.
Tropical Depression 13W
| Tropical depression (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | August 8 – August 14 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 1002 hPa (mbar) |
A tropical depression gradually drifted north and early on August 10, the JTWC started monitoring the system as a tropical depression and designated it 13W. Initially, the JMA predicted the system to strengthen into a tropical storm, but on August 11, as it moved further north into cool waters and unfavourable conditions, the JMA issued their final advisory. Later, the JTWC too issued their final warning on the system, reporting that it had moved into a subtropical ridge and was expected to dissipate into a remnant low. However, the JMA continued to track the remnants as a weak tropical depression over the next few days until the system dissipated on August 15.
Typhoon Nanmadol (Mina)
Main article: Typhoon Nanmadol (2011)| Very strong typhoon (JMA) | |
| Category 5 super typhoon (SSHWS) | |
  | |
| Duration | August 21 – August 31 |
|---|---|
| Peak intensity | 185 km/h (115 mph) (10-min); 925 hPa (mbar) |
Late on August 19, an area of low pressure developed north of Palau. Early on August 20, the system became better organized and developed a low-level circulation center (LLCC). The system then turned north and continued to drift north until August 21, when the JMA upgraded the low-pressure area to a tropical depression east of Philippines. The JTWC also issued a Tropical Cyclone Formation Alert (TCFA), reporting that the system was becoming better organized. Later that day, the PAGASA started monitoring the system as a tropical depression and named it Mina. Late on August 22, the system became more well organized prompting the JTWC to initiate advisories on the system, designating it 14W. On August 23, the JMA upgraded 14W to a tropical storm, naming it Nanmadol. Overnight, the system continued to intensify and early on August 24, the JMA upgraded Nanmadol to a severe tropical storm. Later that day, convective banding improved and Nanmadol developed an eye-like feature. As a result, Nanmadol continued to intensify rapidly and became a typhoon, by midnight. Nanmadol continued to drift north east and made landfall over Gonzaga, Cagayan, Philippines with strong winds of over 110 mph (180 km/h). Nanmadol weakened significantly after interacting with land and early on August 28, the JMA downgraded Nanmadol to a severe tropical storm. Late on August 28, Nanmadol made its second landfall over Taimali in the Taitung County of Taiwan and started weakening. Landfall weakened the system rapidly prompting the JMA to downgrade Nanmadol to a tropical storm with winds of under 50 mph (80 km/h). Soon, it started experiencing strong wind shear and continued weakening. The shear pushed convection approximately 70 km (43 mi) south of the LLCC. The system also accelerated towards China at 8 knots (15 km/h; 9.2 mph) and weakened to a minimal tropical storm. After its third landfall over Fujian, Nanmadol weakened rapidly prompting both the JTWC and the JMA to issue their final warnings on the system.
On August 27, five people died after Nanmadol caused landslides. At least two Filipino fishermen were reported to be missing after Nanmadol's strong winds whipped up large waves. In September 2011, the JTWC upgraded Nanmadol to a Category 5 super typhoon in post-analysis.
Severe Tropical Storm Talas
Main article: Tropical Storm Talas (2011)| Severe tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | August 23 – September 5 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 970 hPa (mbar) |
Late on August 21, a low-pressure area developed to the west of Guam, which is associated from the remnants of a tropical depression. At midnight that day, the system became sufficiently well organized that the JMA started tracking it as a tropical depression. On August 23, the system moved into an environment of low wind shear and warm sea surface temperatures prompting the JTWC to issue a TCFA on it. By August 25, the system grew strong enough that the JMA upgraded it to a tropical storm, naming it Talas. Later that day, the JTWC followed suit and initiated advisories on Talas. Talas continued to strengthen and by midnight that day, it became a severe tropical storm. Over the next few days, Talas continued to drift north very slowly until late on August 29, when the JMA upgraded Talas to a typhoon. Soon, a subtropical ridge to the west of the storm weakened and the subtropical ridge to the east of the system pushed Talas to the west. As a result, Talas accelerated towards the west maintaining strength and outflow. An upper-level cyclone over the system suppressed the convection and kept it from reaching the center. Therefore, Talas remained weak and did not strengthen further. Convection never managed to consolidate the center and convective banding remained well away from the fully exposed low-level circulation center. The convective banding continued to expand more and more with the outer rainbands already brushing parts of Japan. Coastal areas in the nation have already reported gale-force winds several hours before landfall, while the Omega block continued to drive Talas towards the nation. Land interaction weakened Talas, prompting the JMA to downgrade Talas from a typhoon to a severe tropical storm with winds of under 60 knots (110 km/h; 69 mph). Early on September 3, Talas made landfall over Aki, Japan. After landfall, Talas accelerated north at over 13 knots (24 km/h; 15 mph) and its central convection became significantly eroded and was displaced to the north-east as Talas was exposed to a very strong wind shear of over 50 knots (93 km/h; 58 mph) that made the LLCC very distorted and difficult to pin-point. Talas was embedded in a baroclinic zone and the JTWC anticipated an extratropical transition, which prompted them to issue their final warning on the system. On September 5, the JMA issued their final warning on the system, reporting that Talas has become extratropical on the Sea of Japan.
In October 2011, the JMA upgraded Talas as a typhoon in post-analysis. But during 2014, the JMA downgraded Talas again to a severe tropical storm on another post-analysis.
Tropical Storm Noru
| Tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | September 2 – September 6 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 990 hPa (mbar) |
During September 1, the JTWC reported that a tropical disturbance had developed within the outflow of Tropical Storm Talas, about 980 km (610 mi) to the northeast of Hagåtña, Guam. Deep convection surrounded the systems low-level circulation but it was not organising as it was impacted, by a moderate to strong amount of vertical wind shear, which was produced by Talas' outflow and a TUTT cell to the northeast of the system. However, during that day vertical wind shear surrounding the system relaxed and the system started to consolidate, while it moved towards the north-northwest around a subtropical ridge of high pressure. Early the next day, because the system continued to consolidate the JTWC issued a Tropical Cyclone Formation Alert, while the JMA reported that the system had become a tropical depression. Over the next 24 hours, the system continued to consolidate as it moved towards the north-northwest before the JTWC initiated advisories on the system as it intensified into Tropical Storm 16W, however the JMA did not name it as Noru until 0600 UTC on September 4,. As it was named, the JTWC reported that Noru had peaked with 1-minute windspeeds of 85 km/h (55 mph), while the JMA reported peak 10-minute sustained wind speeds of 75 km/h (45 mph). On September 5, after it had peaked in intensity, a fresh Tutt cell developed over the system and started to inhibit outflow and shear the convection away, which meant as a result that the system started to weaken. Over the next two days, Noru went through an extratropical transition before becoming an extratropical cyclone on September 6, about 1,150 km (710 mi) to the northeast of Tokyo, Japan. As an extratropical cyclone, Noru continued its movement towards the north-northwest and affected Sakhalin and the Kuril Islands, before it moved over Okhotsk on September 9, and dissipated.
Tropical Storm Kulap (Nonoy)
| Tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | September 6 – September 11 |
|---|---|
| Peak intensity | 65 km/h (40 mph) (10-min); 1000 hPa (mbar) |
Late on September 4, an area of low pressure developed to the southeast of Okinawa, Japan. Over the next two days, the system drifted north and developed a well defined LLCC with organized convective banding, prompting the JMA to upgrade the low-pressure area to a tropical depression. On September 7, convection consolidated the low-level circulation center very well with tightly curved banding wrapped into it. Also, high sea-surface temperatures and very low wind shear caused the system to undergo rapid deepening, prior to which, the JMA upgraded the system to a tropical storm and named it Kulap. However, the system stopped strengthening soon after as the LLCC became partially exposed and the convection was displaced to the south. Kulap remained small in size and dry air entering from the western periphery kept it from strengthening further. Wind shear increased, pushing convection approximately 180 nautical miles (330 km; 210 mi) south of the LLCC. Also, Kulap was located beneath a tropical upper tropospheric trough (TUTT cell) that caused subsidence. A mid-level subtropical steering ridge caused Kulap to track in a northwestward direction. On September 8, Kulap moved into the east-northeast periphery of the Philippine Area of Responsibility (PAR) prompting the PAGASA to start issuing advisories on the system, naming it Nonoy. However, Kulap quickly accelerated north and exited the PAR on the same evening, prompting the PAGASA to issued their final advisory on the system. After increasing wind shear caused further weakening, the JTWC downgraded Kulap to a tropical depression late on September 8,. Early on September 10, the JMA too downgraded Kulap to a tropical depression, and continued to track Kulap's remnants as a tropical depression until it was finally absorbed by the weather front early on September 11.
Typhoon Roke (Onyok)
Main article: Typhoon Roke (2011)| Very strong typhoon (JMA) | |
| Category 4 typhoon (SSHWS) | |
  | |
| Duration | September 9 – September 22 |
|---|---|
| Peak intensity | 155 km/h (100 mph) (10-min); 940 hPa (mbar) |
Early on September 8, a cluster of thunderstorms came together as a low-pressure area with improving outflow and a developing low-level circulation center (LLCC). Later that day, the JMA upgraded the low-pressure area to a tropical depression north-northeast of the Northern Mariana Islands. Over the next two days, the system gradually drifted west and intensified slightly, prompting the JTWC to issue a Tropical Cyclone Formation Alert (TCFA) on it. Convection gradually consolidated the LLCC and the JTWC initiated advisories on the system on September 11, designating it with 18W. The next day, the depression drifted into the Philippine Area of Responsibility (PAR) and the PAGASA initiated advisories on the depression, naming it Onyok. However, just as similar to Kulap, Onyok also exited the PAR in 6 hours from entering the region. In an advisory, the JTWC reported that there were at least two more vortices associated with the system, that caused an abrupt, erratic movement. However, being located in an area of warm sea surface temperatures and low vertical wind shear, the depression continued to strengthen and on September 13, the JMA upgraded the depression to a tropical storm and named it Roke. On September 17, Roke developed a small, deep convective eye promoting the JMA to upgrade Roke to a severe tropical storm with winds of over 50 knots (93 km/h; 58 mph). Between September 19 and 20, Roke underwent Explosive intensification, a more extreme case of rapid deepening that involves a tropical cyclone deepening at a rate of at least 2.5 mbar per hour for a minimum of 12 hours. Also, they added that Roke developed a 10 nautical miles (19 km; 12 mi) eye and a good poleward outflow channel. On September 21, Typhoon Roke made landfall over Hamamatsu, Japan at about 5:00 UTC (14:00 JST). Soon Roke started weakening as cloud tops started getting warmed up and eye diameter started to decrease. However, the system still maintained a near radial outflow and the convective structure continued to remain organized that kept Roke from dissipating rapidly. Although Roke entered a de-intensification phase, it still had plenty of strength that posed a great threat to regions of Japan. Being located approximately 330 nautical miles (610 km; 380 mi) southwest of Yokosuka, the typhoon accelerated north-northwestward at approximately 16 knots (30 km/h; 18 mph) with winds of over 100 knots (190 km/h; 120 mph) (1-min sustained) being a Category 3 typhoon on the SSHS. Being embedded in the baroclinic zone, Roke started its extratropical transition. Also, land interaction severely weakened the storm to a minimal Category 1 typhoon with winds of under 70 knots (130 km/h; 81 mph) (1-min sustained). Only six hours later, the storm further weakened and accelerated northeastward at approximately 31 knots (57 km/h; 36 mph) with rapidly dissipating deep convection completely sheared to the northeast of the LLCC. As a result, the JTWC ceased advisories on the storm, as it became fully extratropical.
Typhoon Sonca
| Typhoon (JMA) | |
| Category 2 typhoon (SSHWS) | |
  | |
| Duration | September 14 – September 20 |
|---|---|
| Peak intensity | 130 km/h (80 mph) (10-min); 970 hPa (mbar) |
Early on September 13, a low-pressure area formed northeast of the Northern Mariana Islands. The system gradually drifted north and steadily intensified until the next day when the JMA upgraded the system to a tropical depression. Later on September 14, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on the system reporting that the system could intensify into a tropical storm within 24 hours from then. Convection rapidly consolidated the center with persistent, deep convection around the north-eastern periphery, prompting the JTWC to initiate advisories on the system, designating it with 19W. Soon, the JMA also initiated advisories on the system, upgrading it to Tropical Storm Sonca. In the begging, Sonca seemed to have intensified rapidly since formation, however, soon the storm weakened back to a minimal tropical storm because of dry air entering the LLCC that caused it to elongate and weaken. However, that was not for too long as vigorous convection persisted over the well defined LLCC with tightly curved banding wrapped in, Sonca continued to strengthen gradually and the JTWC reported winds of at least 50 knots (93 km/h; 58 mph) near the center. As Sonca continued to strengthen, and the JMA upgraded it to a severe tropical storm on September 17,. Later that day, Sonca developed a large 10 nautical miles (19 km; 12 mi) ragged eye with deep convective banding tightly wrapped into it. As a result, Sonca strengthened more rapidly and by early the next day, it became a typhoon. On September 19, Sonca reached a peak intensity of 85 knots (157 km/h; 98 mph) (1-min mean) and 70 knots (130 km/h; 81 mph) (10-min mean) and soon the convection around the northern periphery started weakening. Being embedded in a baroclinic zone with low sea surface temperatures, Sonca started its extratropical transition late on September 19.
The transition took place relatively fast because of a frontal boundary and the JTWC reported that Sonca became extratropical early on September 20, while the JMA did the same later in the evening.
Typhoon Nesat (Pedring)
Main article: Typhoon Nesat (2011)| Typhoon (JMA) | |
| Category 4 typhoon (SSHWS) | |
  | |
| Duration | September 23 – September 30 |
|---|---|
| Peak intensity | 150 km/h (90 mph) (10-min); 950 hPa (mbar) |
On September 23, both the JMA and the JTWC reported that Tropical Depression 20W, had developed about 610 km (380 mi) to the southwest of Hagåtña, Guam. Early on September 24, the JMA further upgraded 20W to a tropical storm and named it Nesat. Nesat continued to drift west with expanding deep convection around the entire system and consolidating convection around the LLCC. The mid-level warm anomaly near the system continued to intensify and convective banding near the LLCC became more and more tighter. As a result, the JMA upgraded Nesat to a severe tropical storm on September 25,. Late on the same day, the JMA further upgraded Nesat to a typhoon. The system rapidly deepened and quickly developed a 30 nautical miles (56 km; 35 mi) ragged eye and mesoscale anticyclone aloft generating an exceptionally excellent all-around outflow. Also, the system had a highly symmetric radial outflow. The JTWC originally anticipated Nesat to become a category 4 typhoon on the SSHS with winds exceeding 130 knots (240 km/h; 150 mph) (1-min sustained). However, because of a cold anomaly, the system only reached a maximum 1-min sustained wind speed of 115 knots (213 km/h; 132 mph).
Early on September 27, Nesat made landfall over the Luzon region of Philippines. As a result, the eyewall got eroded and the maximum 1-min sustained winds dropped to 95 knots (176 km/h; 109 mph). The system approached land at nearly 10 knots (19 km/h; 12 mph). However, later on that day, the LLCC started to get re-consolidated with convection as Nesat quickly moved west and re-emerged over water. At that time, it was located near the southern periphery of a deep layered subtropical steering ridge and moved towards the southwest and the winds further dropped to 85 knots (157 km/h; 98 mph) because of land interaction. Though the system has maintained overall central deep convection, subsidence persisted along the northwest quadrant which caused further drop in wind speed. Upper level analysis indicated that Nesat was to the south of a ridge axis in an area of moderate vertical wind shear. The system continued to weaken with convective banding loosely wrapped into the partially exposed LLCC. The winds continued to drop and eventually reached 65 knots (120 km/h; 75 mph) (1-min sustained) which made it a minimal typhoon on the SSHS. Though the weakening, Water vapour imagery showed that the typhoon was still maintaining excellent outflow towards the equator and improving outflow towards the pole. Nesat maintained a relatively large area of gale-force winds. Animated infrared satellite imagery depicted that the storm was expanding in size and convective banding continued to move further and further away from the LLCC. The LLCC was also relatively large, elongated and cloud free.
On September 29, by the time Nesat managed to re-develop ad 10 nautical miles (19 km; 12 mi) ragged eye, it made landfall over Wenchang in Hainan, China and started weakening again. Because of the poor shapre and disorganization at the LLCC, the typhoon could only maintain a maximum 1-min sustained windspeed of 65 knots (120 km/h; 75 mph). Even after the landfall, Nesat maintained vigorous convection all around the LLCC and did not weaken too much when compared to the reactions after the Philippine landfall. There was a sea-surface temperature of approximately 28 °C (82 °F) and a slight vertical wind shear of 10 knots (19 km/h; 12 mph) near the system's center at that time. The JTWC anticipated the storm to gradually drift over the Gulf of Tonkin and make landfall over Vietnam with a 1-min sustained wind speed of at-least 50 knots (93 km/h; 58 mph). Early on September 30, Nesat made its final landfall over northern Vietnam with a 1-mim sustained windspeed of 55 knots (102 km/h; 63 mph) and a well-defined, tightly wrapped LLCC, and soon it started weakening. Due to land interaction, the convection around the system started decaying rapidly. Due to the rapid weakening, the JTWC ceased advisories on the storm, soon afterwards. Later that evening, the JMA downgraded Nesat to a tropical low over land and issued their final warning on the system.
The residents of Manila had nothing to do but wading through waist-deep floodwaters, dodging branches and flying debris as the typhoon sent surging waves as tall as palm trees over seawalls completely submerging neighborhoods. By the evening of September 27, at-least 7 people were reported to be killed and most of them in metropolitan Manila, a place already battered by heavy monsoonal rains. Similar to the Tulane University during Hurricane Katrina, the Manila Hospital moved patients from its ground floor which was flooded with neck-deep waters. Hospital generators were flooded and the building had no power since the typhoon arrived. Soldiers and police in trucks moved thousands of residents, most importantly the women and the children away from the Baseco shanty after many houses were washed away in the storm surge and floodwaters brought by Nesat. The typhoon made landfall before dawn triggering instant response. Authorities ordered more than a hundred thousand people across the country to flee from Typhoon Nesat's rains and wind gusts. Several schools and offices were shut and thousands were stranded after flight and ferry services were completely disrupted by the fierce storm. Nearly thirty-seven percent of Manila Electric Company's service area was left without power after high winds and heavy rains toppled power lines. Also, in Malabon, Navotas and Valenzuela the Manila Electric power company shut down power to prevent any accidents.
During late 2011, the JTWC instead upgraded Nesat from a category 3 to a category 4 typhoon as a post-analysis.
Tropical Storm Haitang
Main article: Tropical Storm Haitang (2011)| Tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | September 24 – September 27 |
|---|---|
| Peak intensity | 65 km/h (40 mph) (10-min); 996 hPa (mbar) |
On the evening of September 21, at almost the same time when Nesat was first seen, another low-pressure area persisted far south of Hong Kong. The low slowly drifted north and strengthened slowly until September 24, when the JMA upgraded the system to a tropical depression east of Vietnam. Later that day, the JTWC issued a Tropical Cyclone Formation Alert stating that the low could develop into a tropical cyclone. Only a few hours later, the JTWC initiated advisories on the system, designating it with 21W. Early the next day, the storm strengthened significantly that the JMA upgraded it to a tropical storm, naming it Haitang. Later that day, the storm developed a better organized; however, the system's low-level circulation center (LLCC) became fully exposed due to moderate vertical wind shear from the nearby system, Typhoon Nesat, which also caused the storm to remain very weak with winds of 35 knots (65 km/h; 40 mph). By that night, wind shear from Nesat, which was moving closer towards Haitang, strengthened and pushed all the convection to the west-southwest keeping the storm relatively weak. Though a ridge building over China impinged poleward outflow, the euquatoward outflow remained significantly excellent. Haitang was also a slow-mover, moving westward at only 3 knots (5.6 km/h; 3.5 mph). However, by the night of September 26, Haitang rapidly accelerated west at over 13 knots (24 km/h; 15 mph) and made landfall over Vietnam. Though there was a burst of convection at that time, both land interaction and vertical wind shear weakened the system into a tropical depression and the JTWC ceased their advisories. The JMA tracked Haitang as a tropical depression until it finally dissipated inland Vietnam early on September 27,.
Typhoon Nalgae (Quiel)
Main article: Typhoon Nalgae (2011)| Very strong typhoon (JMA) | |
| Category 4 super typhoon (SSHWS) | |
  | |
| Duration | September 26 – October 5 |
|---|---|
| Peak intensity | 175 km/h (110 mph) (10-min); 935 hPa (mbar) |
On September 26, the Japan Meteorological Agency (JMA) started to monitor a weak tropical depression that had developed about 1,260 km (785 mi) to the northwest of Manila in the Philippines. During that day, while the depression moved towards the northwest its low level circulation centre rapidly consolidated in an area of favourable conditions for further development of the system. This prompted the JTWC to issue a Tropical Cyclone Formation Alert on the system early the next day. However less than 3 hours later, the JTWC decided to issue advisories on the system designating it as Tropical Depression 22W, before the JMA reported that the depression had become a tropical storm and named it Nalgae.
The storm slowly drifted to the west and kept on intensifying gradually. Nalgae developed a microwave eye like feature and well defined convective banding in all the quadrants. The system had a tiny radius of winds, though it was still strengthening significantly and was very well defined. On the evening of September 28, the JMA reported that Nalgae continued to intensify, as they upgraded it to a severe tropical storm with winds of over 55 knots (102 km/h; 63 mph). On that night, the PAGASA initiated advisories on Nalgae, giving it the local name Quiel, as it entered the Philippine Area of Responsibility (PAR). Late on September 29, the JMA upgraded Nalgae to a typhoon. Nalgae rapidly intensified on September 30, and attained category 4 super typhoon status early on October 1, just before making landfall over Luzon. Due to land interaction and colder sea surface temperature in the South China Sea, the JMA downgraded Nalgae to a severe tropical storm on October 2, and then a tropical storm late on October 3. The JTWC downgraded Nalgae to a tropical depression on October 4, and the JMA also did it on the next day. Later on October 5, the remnant low of Nalgae dissipated.
Striking the Philippines just days after Typhoon Nesat, Nalgae caused further damage across Luzon. Although first feared that Nalgae would cause much more damage to Luzon, which was severely affected by Typhoon Nesat, damage from the storm was not as anticipated to be lighter than Typhoon Nesat, which ironically is much weaker than Nalgae, but high winds and heavy rains from the storm caused widespread power outages and flooding that left many communities isolated. Nearly 2,900 homes were destroyed and approximately another 15,400 sustained damage. At least 18 people were killed by the storm and another 7 were reported as missing as of October 11. A total of 1,113,763 people were affected by the storm. Total losses in the country reached just over 115 million PHP (US$2.62 million).
Tropical Storm Banyan (Ramon)
| Tropical storm (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | October 9 – October 14 |
|---|---|
| Peak intensity | 65 km/h (40 mph) (10-min); 1002 hPa (mbar) |
On October 7, the JTWC started monitoring a tropical disturbance that had developed in an area of low vertical windshear, about 750 km (470 mi) to the south of Hagåtña, Guam. Over the next couple of days the system gradually developed further while moving towards the west, before the JMA reported on October 9, that the disturbance had developed into a tropical depression. Early on October 10, the JTWC upgraded the system to a tropical depression designating as 23W, and the PAGASA also upgraded it to a tropical depression and named it Ramon. On October 11, the JMA and the JTWC upgraded the system to a tropical storm and named it Banyan. Early on October 12, Banyan made landfall over Leyte, Philippines, and the JTWC downgraded it to a tropical depression. A half day later, the JMA also downgraded Banyan to a tropical depression. The system dissipated in the South China Sea, on October 16,.
While tracking through the Philippines, Banyan produced heavy rains across much of the country, leading to widespread flooding. At least ten people were killed by the storm and another was reported missing. A total of 75,632 people were affected by the storm.
Tropical Depression 24W
| Tropical depression (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | November 7 – November 8 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); 1004 hPa (mbar) |
On November 5, the JTWC started to monitor a tropical disturbance that had developed within an area of low vertical windshear, about 640 km (400 mi) to the east-southeast of Ho Chi Minh City in Vietnam. Over the next couple of days the disturbance moved towards the north-northwest as atmospheric convection surrounding the system wrapped into the disturbances developing low-level circulation center. During November 7, the JMA and the JTWC reported that the disturbance had become a tropical depression and started to warn on it with the latter designating it as Tropical Depression 24W.
Tropical Depression 25W
| Tropical depression (SSHWS) | |
  | |
| Duration | December 3 – December 5 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (1-min); 1006 hPa (mbar) |
During December 3, the JTWC started to monitor a tropical disturbance, that had developed within an area of moderate vertical windshear, about 180 km (110 mi) to the northwest of Bandar Seri Begawan, Brunei. During that day deep atmospheric convection surrounding the system built over the disturbances low level circulation, before the JTWC reported during the next day, that the disturbance had developed into a tropical cyclone and designated it as Tropical Depression 25W. Despite being predicted to intensify into a tropical storm after being designated, the depression moved towards the northwest and rapidly deteriorated as it interacted with the cold and dry north-easterlies, as a result the JTWC issued their final warning on the system early on December 5.
Tropical Depression 26W
| Tropical depression (JMA) | |
| Tropical depression (SSHWS) | |
  | |
| Duration | December 10 – December 14 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 1004 hPa (mbar) |
On December 9, the JTWC started to monitor a tropical disturbance that had developed about 550 km (340 mi) to the south-southeast of Manila on Luzon Island. On December 11, the JTWC cancelled the TCFA on the disturbance due to the interaction with the cold air coming from the north. The tropical depression reached peak intensity during midday, on December 11, as it was located over the center, of the South China Sea. But later that day, the depression began to weaken rapidly, as the storm moved southeastward. However, the JTWC issued a TCFA on the disturbance again early on December 12, because of a decrease in vertical wind shear. After a few hours, the JTWC upgraded it to a tropical depression and designated as 26W. After a couple of days drifting southwestwards in the South China Sea, on December 13, the JTWC issued their final advisories on the system as it started to weaken. Late on December 14, the tropical depression dissipated near Borneo.
Severe Tropical Storm Washi (Sendong)
Main article: Tropical Storm Washi| Severe tropical storm (JMA) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | December 13 – December 19 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 992 hPa (mbar) |
On December 11, a disturbance formed and persisted near Chuuk. On December 13, the low-pressure area rapidly intensified prompting the JTWC to issue a TCFA. On the same day, the JTWC upgraded the low pressure to a tropical depression and designated as 27W; in addition, the JMA also upgraded it to a tropical depression. The JTWC upgraded the system to a tropical storm on December 14, but downgraded it to a tropical depression early on December 15, and the PAGASA designated it Sendong as it entered the Philippine Area of Responsibility. After passing Palau on December 15, both the JTWC and the JMA upgraded the system to a tropical storm and named it Washi. On December 16, Washi made landfall over Surigao del Sur, a province of the Philippines located in Mindanao. Several hours later, Washi arrived at the Sulu Sea and regained its strength quickly, due to slight land interaction with Mindanao. Late on December 17, Washi crossed Palawan, and arrived at the South China Sea. On December 19, Washi weakened into a tropical depression and dissipated.
In the Philippines, Washi has caused at least 1,268 fatalities, and 1,079 people are officially listed as missing. Washi had affected 102,899 families or 674,472 people in 766 villages in 52 towns and eight cities in 13 provinces. The majority of the deaths were in the cities of Iligan and Cagayan de Oro. Five people were killed in a landslide, but all others died in flash flooding. More than 2,000 have been rescued, according to the Armed Forces of the Philippines. Officials were also investigating reports that an entire village was swept away. The flash flooding occurred overnight, following 10 hours of rain, compounded by overflowing rivers and tributaries. In some areas, up to 20 centimeters of rain fell in 24 hours. At least 20,000 people were staying in 10 evacuation centers in Cagayan de Oro. Officials said that despite government warning, some people did not evacuate. At least 9,433 houses were destroyed while 18,616 were damaged.
Other systems
The following weak tropical depressions were also monitored by one or more of the warning centers, however they were either short lived or did not significantly develop further. On May 31, the JMA reported that a tropical depression had developed at the southern end of a shear line, about 420 km (260 mi) to the southeast of Hong Kong, China. During that day as the depression moved towards the north-northeast, a trough of low pressure located over Hainan island and dry cold air wrapping into the depression's circulation inhibited further development of the depression. The depression then degenerated into an area of low pressure during the next day, before it dissipated during June 2,. On June 14, the JMA reported that a tropical depression had developed within an area of moderate vertical windshear, about 475 mi (764 km) to the southwest of Manila, Philippines. During that day the depression moved to the north-northwest, before the system dissipated during the next day. On July 16, the JMA reported that a tropical depression had developed about 225 km (140 mi) to the east of Hanoi in northern Vietnam, however it quickly weakened after interacting with land. In the morning of July 16, the Japan Meteorological Agency located in an area of low pressure on the land was upgraded to a tropical depression later on the same day. On July 17, the JMA downgraded the tropical depression to a low pressure. The Hong Kong Observatory only classified the tropical depression as a trough of low pressure is not to be ignored, while the Joint Typhoon Warning Center nor recognize this as a tropical disturbance. On August 19, a low-pressure area developed east-northeast of Guam. Early on August 20, the system developed a broad area of low level circulation center and a good divergence aloft becoming more well defined. Later that day, the JMA upgraded the system to a tropical depression southeast of the Bonin Islands. On August 22, the system started interacting with an anticyclone and was exposed to a strong vertical wind shear, prompting the JMA to stop monitoring the system as a tropical depression, as the system dissipated to a remnant low. However, at midnight, the same day, the remnants regenerated, and the JMA started tracking the system as a tropical depression again, until it last appeared near Okinawa, Japan on August 25, as the system dissipated completely. On September 14, the JMA started to monitor a tropical depression that had developed about 720 km (450 mi) to the southeast of Taipei in Taiwan. During that day, the depression remained near stationary, before becoming stationary, the JMA then last noted the depression late on September 15, as it was absorbed by Typhoon Roke.
On October 11, the JMA reported that a tropical depression had developed to the southeast of Hainan Island. Late on October 13, the system dissipated, just after making landfall over Vietnam. On December 24, the JMA reported that a tropical depression had developed about 1,768 km (1,099 mi) to the southeast of Manila, in the Philippines. During that day, the depression moved towards the northwest before the JMA issued their final advisory on the system. The final tropical depression of the year then developed on December 31, about 340 km (210 mi) to the northeast of Kuala Lumpur, Malaysia. During that day the system moved slowly towards the northwest before it was last noted early the next day on January 1, 2012.
Storm names
See also: Tropical cyclone naming and History of tropical cyclone namingWithin the North-western Pacific Ocean, both the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names. The Japan Meteorological Agency's RSMC Tokyo — Typhoon Center assigns international names to tropical cyclones on behalf of the World Meteorological Organization's Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of 65 km/h (40 mph). While the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had an international name assigned to it. The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee. Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in gray.
International names
Main article: List of retired Pacific typhoon namesDuring the season 21 tropical storms developed in the Western Pacific and each one was named by the JMA, when the system was judged to have 10-minute sustained windspeeds of 65 km/h (40 mph). The JMA selected the names from a list of 140 names, that had been developed by the 14 members nations and territories of the ESCAP/WMO Typhoon Committee.
| Aere | Songda | Sarika | Haima | Meari | Ma-on | Tokage | Nock-ten | Muifa | Merbok | Nanmadol |
| Talas | Noru | Kulap | Roke | Sonca | Nesat | Haitang | Nalgae | Banyan | Washi |
Retirement
After the season the Typhoon Committee retired the name Washi from its naming lists, and in February 2012, it was subsequently replaced with Hato for future seasons.
Philippines
Main article: List of retired Philippine typhoon names| Amang | Bebeng | Chedeng | Dodong | Egay |
| Falcon | Goring | Hanna | Ineng | Juaning |
| Kabayan | Lando | Mina | Nonoy | Onyok |
| Pedring | Quiel | Ramon | Sendong | Tisoy (unused) |
| Ursula (unused) | Viring (unused) | Weng (unused) | Yoyoy (unused) | Zigzag (unused) |
| Auxiliary list | ||||
|---|---|---|---|---|
| Abe (unused) | Berto (unused) | Charo (unused) | Dado (unused) | Estoy (unused) |
| Felion (unused) | Gening (unused) | Herman (unused) | Irma (unused) | Jaime (unused) |
During the season PAGASA used its own naming scheme for the 19 tropical cyclones, that either developed within or moved into their self-defined area of responsibility. The names were taken from a list of names, that had been last used during 2007 and are scheduled to be used again during 2015. The names Nonoy, Onyok, Pedring, Quiel, Ramon, and Sendong were used for the first (and only, in the cases of Pedring and Sendong) time during the year.
Retirement
After this season, the Typhoon Committee retired the name Washi from its naming lists, and in February 2012, it was subsequently replaced with Hato for future seasons.
Meanwhile, the names Bebeng, Juaning, Mina, Pedring, and Sendong were retired by PAGASA, as they had caused over Php1 billion in damages, and in Sendong's case, over 300 deaths. They were subsequently replaced on the list with Betty, Jenny, Marilyn, Perla, and Sarah.
Season effects
This table lists all of the tropical cyclones that were monitored during the 2011 Pacific typhoon season. Information on their intensity, duration, name, areas affected, primarily comes from the warning centres while death and damage reports come from either press reports or the relevant national disaster management agency and include any impact that was associated with the system.
| Name | Dates | Peak intensity | Areas affected | Damage (USD) |
Deaths | Refs | ||
|---|---|---|---|---|---|---|---|---|
| Category | Wind speed | Pressure | ||||||
| 01W | April 1–4 | Tropical depression | 55 km/h (34 mph) | 1,004 hPa (29.65 inHg) | None | None | None | |
| 02W (Amang) | April 3–6 | Tropical depression | 55 km/h (34 mph) | 1,000 hPa (29.53 inHg) | Mariana Islands | None | None | |
| Aere (Bebeng) | May 5–12 | Tropical storm | 75 km/h (47 mph) | 992 hPa (29.29 inHg) | Philippines, Japan | $34.4 million | 48 | |
| Songda (Chedeng) | May 19–29 | Violent typhoon | 195 km/h (121 mph) | 920 hPa (27.17 inHg) | Micronesia, Philippines, Japan, British Columbia | $287 million | 17 | |
| TD | May 31 – June 1 | Tropical depression | Not specified | 1,004 hPa (29.65 inHg) | None | None | None | |
| Sarika (Dodong) | June 8–11 | Tropical storm | 75 km/h (47 mph) | 996 hPa (29.41 inHg) | Philippines, China | $248 million | 28 | |
| TD | June 14–15 | Tropical depression | Not specified | 1,004 hPa (29.65 inHg) | China | None | None | |
| Haima (Egay) | June 16–25 | Tropical storm | 75 km/h (47 mph) | 985 hPa (29.09 inHg) | Philippines, China, Vietnam, Laos, Thailand | $167 million | 18 | |
| Meari (Falcon) | June 20–27 | Severe tropical storm | 110 km/h (68 mph) | 975 hPa (28.79 inHg) | Philippines, China, Japan, Korea | $1.24 million | 11 | |
| Goring | July 8–10 | Tropical depression | 45 km/h (28 mph) | 1,000 hPa (29.53 inHg) | Japan, Taiwan | None | None | |
| Ma-on (Ineng) | July 11–24 | Very strong typhoon | 175 km/h (109 mph) | 935 hPa (27.61 inHg) | Mariana Islands, Japan | $50 million | 5 | |
| Tokage (Hanna) | July 13–15 | Tropical storm | 65 km/h (40 mph) | 1,000 hPa (29.53 inHg) | None | None | None | |
| TD | July 16–17 | Tropical depression | Not specified | 1,000 hPa (29.53 inHg) | China | None | ||
| Nock-ten (Juaning) | July 24–31 | Severe tropical storm | 95 km/h (59 mph) | 985 hPa (29.09 inHg) | Philippines, China, Vietnam, Laos, Thailand | $126 million | 128 | |
| Muifa (Kabayan) | July 25 – August 9 | Very strong typhoon | 175 km/h (109 mph) | 930 hPa (27.46 inHg) | Caroline Islands, Philippines, Japan, China, Korea | $480 million | 22 | |
| Lando | July 31 – August 2 | Tropical depression | Not specified | 1,002 hPa (29.59 inHg) | Philippines | None | None | |
| Merbok | August 2–9 | Severe tropical storm | 95 km/h (59 mph) | 980 hPa (28.94 inHg) | None | None | None | |
| TD | August 2–4 | Tropical depression | 55 km/h (34 mph) | 1,008 hPa (29.77 inHg) | Japan | None | None | |
| 13W | August 8–14 | Tropical depression | 55 km/h (34 mph) | 1,004 hPa (29.65 inHg) | None | None | None | |
| TD | August 8–10 | Tropical depression | 55 km/h (34 mph) | 1,008 hPa (29.77 inHg) | None | None | None | |
| TD | August 20–25 | Tropical depression | 55 km/h (35 mph) | 1,004 hPa (29.65 inHg) | None | None | None | |
| Nanmadol (Mina) | August 21–31 | Very strong typhoon | 185 km/h (115 mph) | 925 hPa (27.32 inHg) | Philippines, Taiwan, China | $1.49 billion | 38 | |
| Talas | August 23 – September 5 | Severe tropical storm | 95 km/h (59 mph) | 970 hPa (28.64 inHg) | Japan | $600 million | 82 | |
| Noru | September 2–6 | Tropical storm | 75 km/h (47 mph) | 990 hPa (29.23 inHg) | None | None | None | |
| Kulap (Nonoy) | September 6–11 | Tropical storm | 65 km/h (40 mph) | 1,000 hPa (29.53 inHg) | Japan, Korea | None | None | |
| Roke (Onyok) | September 8–22 | Very strong typhoon | 155 km/h (96 mph) | 940 hPa (27.76 inHg) | Japan | $1.2 billion | 13 | |
| TD | September 13–15 | Tropical depression | Not specified | 1,002 hPa (29.59 inHg) | Taiwan | None | None | |
| Sonca | September 14–20 | Strong typhoon | 130 km/h (81 mph) | 970 hPa (28.64 inHg) | None | None | None | |
| Nesat (Pedring) | September 23–30 | Strong typhoon | 150 km/h (93 mph) | 950 hPa (28.05 inHg) | Philippines, China, Vietnam | $2.12 billion | 98 | |
| Haitang | September 24–27 | Tropical storm | 65 km/h (40 mph) | 996 hPa (29.41 inHg) | China, Vietnam, Laos | $20 million | 25 | |
| Nalgae (Quiel) | September 26 – October 5 | Very strong typhoon | 175 km/h (109 mph) | 935 hPa (27.61 inHg) | Philippines, China, Vietnam | $250 million | 18 | |
| Banyan (Ramon) | October 9–14 | Tropical storm | 65 km/h (40 mph) | 1,002 hPa (29.59 inHg) | Palau, Philippines | $2.1 million | 10 | |
| TD | October 10–13 | Tropical depression | Not specified | 1,006 hPa (29.71 inHg) | China, Vietnam | None | None | |
| 24W | November 7–10 | Tropical depression | 45 km/h (28 mph) | 1,004 hPa (29.65 inHg) | None | None | None | |
| 25W | December 4–5 | Tropical depression | 45 km/h (28 mph) | 1,006 hPa (29.71 inHg) | None | None | None | |
| 26W | December 10–14 | Tropical depression | 55 km/h (34 mph) | 1,004 hPa (29.65 inHg) | Philippines | None | 4 | |
| Washi (Sendong) | December 13–19 | Severe tropical storm | 95 km/h (59 mph) | 992 hPa (29.29 inHg) | Caroline Islands, Philippines | $97.8 million | 2,546 | |
| TD | December 24 | Tropical depression | Not specified | 1,002 hPa (29.59 inHg) | None | None | None | |
| TD | December 31, 2011 – January 1, 2012 | Tropical depression | Not specified | 1,008 hPa (29.77 inHg) | Malaysia | None | None | |
| Season aggregates | ||||||||
| 39 systems | April 1, 2011 – January 1, 2012 |
195 km/h (121 mph) | 920 hPa (27.17 inHg) | $7.18 billion | 3,111 | |||
See also
- Tropical cyclones in 2011
- List of Pacific typhoon seasons
- 2011 Pacific hurricane season
- 2011 Atlantic hurricane season
- 2011 North Indian Ocean cyclone season
- South-West Indian Ocean cyclone seasons: 2010–11, 2011–12
- Australian region cyclone seasons: 2010–11, 2011–12
- South Pacific cyclone seasons: 2010–11, 2011–12
- South Atlantic tropical cyclone
Notes
- According to the TSR, an intense tropical cyclone is a tropical cyclone with maximum 1-minute sustained winds greater than 175 km/h (110 mph).
References
- ^ Saunders, Mark; Lea, Adam (March 8, 2011). Extended Range Forecast for Northwest Pacific Typhoon Activity in 2011 (PDF) (Report). Tropical Storm Risk Consortium. Archived (PDF) from the original on March 21, 2011. Retrieved August 6, 2013.
- ^ Saunders, Mark; Lea, Adam (March 8, 2011). May Forecast Update for Northwest Pacific Typhoon Activity in 2011 (PDF) (Report). Tropical Storm Risk Consortium. Archived (PDF) from the original on October 4, 2011. Retrieved August 6, 2013.
- ^ Saunders, Mark; Lea, Adam (July 4, 2011). July Forecast Update for Northwest Pacific Typhoon Activity in 2011 (PDF) (Report). Tropical Storm Risk Consortium. Archived (PDF) from the original on October 4, 2011. Retrieved August 6, 2013.
- ^ Saunders, Mark; Lea, Adam (August 5, 2011). August Forecast Update for Northwest Pacific Typhoon Activity in 2011 (PDF) (Report). Tropical Storm Risk Consortium. Archived (PDF) from the original on October 4, 2011. Retrieved August 6, 2013.
- ^ Weather Forecast Center (June 28, 2011). Three to Five Typhoons Expected to Hit Taiwan in 2011 (Report). Taiwan: Central Weather Bureau. Archived from the original (.doc) on September 18, 2018. Retrieved June 28, 2011.
- "Cold weather affects Benguet mummies". Manila Bulletin. January 7, 2010.
- Lee, B.Y. (March 23, 2011). "Speech by Dr. B Y Lee, Director of the Hong Kong Observatory March 23, 2011" (PDF). Hong Kong Observatory. Archived from the original (PDF) on March 4, 2016. Retrieved August 7, 2013.
- ^ China Meteorological Administration (January 30, 2012). Member Report: China (PDF). Typhoon Committee 44th session. The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee. p. 22. Archived (PDF) from the original on March 3, 2016. Retrieved August 6, 2013.
- Early May to mid October 2011 (PDF) (Weather outlook for Thailand during Rainy Season). Thai Meteorological Department. April 26, 2011. Retrieved August 7, 2013.
- ^ Guy Carpenter Asia-Pacific Climate Impact Center (May 9, 2010). May 2011 Predictions of Seasonal Tropical Cyclone Activity over the Western North Pacific (PDF) (Report). City University of Hong Kong. Archived (PDF) from the original on June 16, 2012. Retrieved August 6, 2013.
- ^ Guy Carpenter Asia-Pacific Climate Impact Center (July 4, 2011). Updated Prediction of Seasonal Tropical Cyclone Activity over the Western North Pacific for 2011 (PDF) (Report). City University of Hong Kong. Archived (PDF) from the original on June 16, 2012. Retrieved July 11, 2010.
- "Annual Report on the Activities on the RSMC Tokyo - Typhoon Center" (PDF). Japan Meteorological Agency. 2011.
- "JMA WWJP25 Warning and Summary April 1, 2011 06z". Japan Meteorological Agency. April 1, 2011. Archived from the original on May 22, 2024. Retrieved October 27, 2013.
- Joint Typhoon Warning Center (April 1, 2011). "Significant Tropical Weather Outlook for the Western and South Pacific Oceans". United States Navy, United States Air Force. Archived from the original on May 23, 2024. Retrieved May 7, 2011.
- Joint Typhoon Warning Center (April 2, 2011). "Tropical Depression 01W Warning 1". United States Navy, United States Air Force. Archived from the original on April 30, 2001. Retrieved October 28, 2013.
- Joint Typhoon Warning Center (April 2, 2011). "Tropical Depression 01W Advisory Two". United States Navy, United States Air Force. Archived from the original on May 23, 2024. Retrieved May 7, 2011.
- "JMA High Seas Forecast for 0600 UTC on 4 April 2011". Japan Meteorological Agency. April 4, 2011. Archived from the original on May 2, 2001. Retrieved May 7, 2011.
- "Du bao thoi tiet Quang Tri hom nay ngay mai 3 ngay toi 84". YouTube. April 13, 2012.
- "JMA High Seas Forecast for 1800 UTC on March 30, 2011". Japan Meteorological Agency. March 30, 2011. Archived from the original on May 23, 2024. Retrieved May 8, 2011.
- Joint Typhoon Warning Center (April 2, 2011). "Significant Tropical Weather Outlook for the Western and South Pacific Oceans". United States Navy, United States Air Force. Archived from the original on February 16, 2007. Retrieved May 8, 2011.
- "JMA WWJP25 Warning and Summary 2011-04-03 00z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved March 26, 2012.
- "JMA WWJP25 Warning and Summary 2011-04-03 06z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved March 26, 2012.
- "Tropical Depression "Amang" Severe Weather Bulletin One". Philippine Atmospheric Geophysical and Astronomical Services Administration. April 3, 2011. Archived from the original on July 26, 2009. Retrieved May 8, 2011.
- Joint Typhoon Warning Center (April 5, 2011). "Prognostic Reasoning for Tropical Depression 02W Advisory One". United States Navy, United States Air Force. Archived from the original on August 31, 2003. Retrieved May 8, 2011.
- Michael G. Middlebrooke (April 5, 2011). "Tropical Depression 02W Advisory Number One". National Weather Service Office in Tiyan, Guam. National Oceanic and Atmospheric Administration. Archived from the original on May 23, 2024. Retrieved May 8, 2011.
- Joint Typhoon Warning Center (April 5, 2011). "Prognostic Reasoning for Tropical Depression 02W Advisory Three". Archived from the original on August 31, 2003. Retrieved May 8, 2011.
- Joint Typhoon Warning Center (April 6, 2011). "Tropical Depression 02W Advisory Five (Final)". United States Navy, United States Air Force. Archived from the original on April 30, 2001. Retrieved May 8, 2011.
- ^ Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Oceans 2011-05-03 14z". United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved March 10, 2012.
- ^ RSMC Tokyo — Typhoon Centre (January 30, 2012). Summary of the 2011 Pacific Typhoon Season (PDF). Typhoon Committee 44th session. Hangzhou, China: The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee. p. 6. Archived (PDF) from the original on August 26, 2014. Retrieved March 5, 2012.
- "NDRRMC Update Initial Report on Tropical Depression "Bebeng"" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. May 7, 2011. Archived from the original (PDF) on August 23, 2011. Retrieved May 7, 2011.
- ^ Ramos, Benito T. (May 16, 2011). Situation Report No. 14 on Tropical Storm "Bebeng" (Aere) (PDF) (Report). National Disaster Risk Reduction and Management Center. Archived from the original (PDF) on May 2, 2012. Retrieved December 31, 2011.
- "NDRRMC Update SitRep No. 3 on Tropical Storm "Bebeng"" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. May 8, 2011. Archived from the original (PDF) on August 23, 2011. Retrieved May 8, 2011.
- Suga, Masumi (May 29, 2011). "Typhoon Songda Nearing Tokyo Weakens to 'Extratropical Cyclone'". Bloomberg. Retrieved August 16, 2012.
- ^ "NDRRMC Update SitRep No. 15 on Typhoon "Chedeng" (Songda)" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. May 31, 2011. Archived from the original (PDF) on October 4, 2011. Retrieved August 4, 2011.
- Unattributed (May 28, 2011). 【台風1102号】沖縄：久米島灯台 風速55メートル (in Japanese). 吟遊詩人の戯言. Retrieved July 2, 2011.
- ^ Unattributed (June 23, 2011). 保険支払い２０億円に 台風２号 (in Japanese). Okinawa Times. Archived from the original on June 24, 2011. Retrieved July 2, 2011.
- Unattributed (May 29, 2011). "57 Injured in Okinawa, Tokyo Next". Accuweather. Star Tribune. Retrieved July 2, 2011.
- ^ Unattributed (June 3, 2011). "Typhoon Songda Floods Strike Japan Disaster Zone". Earthweek. Archived from the original on June 6, 2011. Retrieved July 5, 2011.
- Unattributed (May 30, 2011). 台風２号：県内で車水没、１人死亡 新居浜では避難勧告 ／愛媛 – 毎日新聞 (in Japanese). おもっしょい愛媛. Archived from the original on April 25, 2012. Retrieved July 5, 2011.
- "Tropical storm leaves 23 dead, 10 missing". June 11, 2011. Archived from the original on July 25, 2011. Retrieved June 11, 2011.
- "Tropical storm Haima hits southern China, forcing ships to stop service". Lu Hui. Archived from the original on June 25, 2011. Retrieved June 22, 2011.
- Lee Hyo-sik (June 27, 2011). "Typhoon Meari kills 9, leaves 3 missing". Korea Times. Retrieved August 4, 2011.
- Unattributed (July 12, 2011). "Storm leaves casualties, destroys homes in N. Korea". Straits Times. Singapore. Archived from the original on July 20, 2011. Retrieved August 4, 2011.
- Flores, Helen (July 11, 2011). "'Goring' exits; rains to prevail". The Philippine Star. Archived from the original on February 8, 2013. Retrieved August 16, 2012.
- "Tropical depression 'Goring' to bring more rain". Bettina Magsaysay, ABS-CBN. Retrieved July 9, 2011.
- "NWS Guam — Tropical Weather Advisory 1 for Pre-Tropical storm Nock-ten". National Oceanic and Atmospheric Administration. Archived from the original on February 16, 2007. Retrieved July 27, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Depression 10W — Warning 001". Archived from the original on April 30, 2001. Retrieved July 27, 2011.
- "JMA Tropical Cyclone Advisory 250000". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 27, 2011.
- "PAGASA — Severe Weather Bulletin Number ONE". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on July 26, 2009. Retrieved July 27, 2011.
- "JMA Tropical Cyclone Advisory – 260000". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved July 27, 2011.
- "JMA Tropical Cyclone Advisory – 270600". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 27, 2011.
- Joint Typhoon Warning Center. "JTWC — Typhoon 10W — Warning 11". Archived from the original on April 30, 2001. Retrieved July 27, 2011.
- "JMA Tropical Cyclone Advisory – 271200". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 27, 2011.
- "JMA Tropical Cyclone Advisory – 280600". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 28, 2011.
- "JMA — Tropical Storm Advisory 290900 – Tropical Storm Nock-ten". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 29, 2011.
- "JMA Tropical Cyclone Advisory 291200 – Tropical Storm nock-ten". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 29, 2011.
- "JMA — Tropical Cyclone Advisory 301200 – Tropical Storm Nock-ten". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved July 31, 2011.
- "JMA — Tropical Cyclone Advisory 310000 – Post-Tropical Storm Nock-ten". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved July 31, 2011.
- "Pictures: Storm kills 25 in Philippines". Singapore Press Holdings Ltd. Archived from the original on July 27, 2011. Retrieved July 27, 2011.
- "Nock-Ten exits Philippines, 25 dead". Reuters. Thomson Reuters. July 27, 2011. Archived from the original on August 16, 2011. Retrieved July 27, 2011.
- "At least 25 dead, 31 missing as Nock-Ten lands in Philippines". Xinhua News Agency. Archived from the original on March 7, 2012. Retrieved July 27, 2011.
- "Classes suspended in NCR, other areas in Luzon due to 'Juaning'". GMA News. July 27, 2011. Retrieved December 20, 2013.
- "'Juaning' strands 1,600; roads in CAR, C. Luzon impassable". GMA News. July 27, 2011. Retrieved December 20, 2013.
- "26 domestic flights cancelled due to 'Juaning'". ABS-CBN News. July 26, 2011. Retrieved December 20, 2013.
- "NWS Guam — Tropical Cyclone Advisory 231930 for pre-tropical storm Muifa". NOAA. Archived from the original on February 16, 2007. Retrieved July 28, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 001 – Pre-tropical storm Muifa". Archived from the original on April 30, 2001. Retrieved July 28, 2011.
- "JMA — Tropical Cyclone Advisory 260000 – Pre-tropical storm Muifa". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved July 28, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Storm 11W — Warning 011". Archived from the original on May 23, 2024. Retrieved July 28, 2011.
- "JMA — Tropical Cyclone Advisory 280600 – Tropical Storm Muifa". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved July 28, 2011.
- "PAGASA — Severe Weather Bulletin Number ONE — Tropical Storm Kabayan". PAGASA. Archived from the original on May 23, 2024. Retrieved July 28, 2011.
- "JMA Tropical Cyclone Advisory 300000 for Severe Tropical Storm Muifa". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved July 30, 2011.
- "JMA — Tropical Cyclone Advisory 300600 – Typhoon Muifa". Japan Meteorological Agency. Archived from the original on October 14, 2008. Retrieved July 30, 2011.
- Joint Typhoon Warning Center. "JTWC — Super Typhoon Muifa — Warning 24". Archived from the original on April 30, 2001. Retrieved July 31, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 51 – Post-Super Typhoon Muifa". Archived from the original on April 30, 2001. Retrieved August 7, 2011.
- "JMA — Tropical Cyclone Advisory 070600 – Severe Tropical Storm Muifa". Japan Meteorological Agency. Archived from the original on October 14, 2008. Retrieved August 7, 2011.
- "NDRRMC Update re SitRep No. 2 on Tropical Storm "Kabayan" (Muifa)" (PDF). National Disaster Risk Reduction and Management Council. Archived from the original (PDF) on October 7, 2011. Retrieved July 30, 2011.
- "Palace suspends college classes, govt work in NCR". GMA News. August 2, 2011. Retrieved December 20, 2013.
- "Marikina residents start to flee as Alert Level 2 sounded". GMA News. August 2, 2011. Retrieved December 20, 2013.
- "JMA WWJP25 Warning and Summary 2011-07-31 06z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved December 27, 2011.
- Joint Typhoon Warning Center. "Significant Tropical Weather Advisory for the Western and Southern Pacific Ocean 2011-07-31". United States Navy, United States Air Force. Archived from the original on May 23, 2024. Retrieved December 27, 2011.
- "Severe Weather Bulletin number one, Tropical Cyclone Alert: Tropical Depression "Lando" issued at 6.30 pm, 2011-07-31". Philippine Atmospheric, Geophysical and Astronomical Services Administration. July 31, 2011. Archived from the original on August 5, 2012. Retrieved December 27, 2011.
- "Severe Weather Bulletin number four (final), Tropical Cyclone Alert: Tropical Depression "Lando" issued at 5.00 pm, 31 July 2011". Philippine Atmospheric, Geophysical and Astronomical Services Administration. July 31, 2011. Archived from the original on August 5, 2012. Retrieved December 27, 2011.
- "JMA WWJP25 Warning and Summary 2011-07-31 12z". Japan Meteorological Agency. July 31, 2011. Archived from the original on May 2, 2001. Retrieved December 27, 2011.
- "JMA WWJP25 Warning and Summary 2011-08-02 18z". Japan Meteorological Agency. August 2, 2011. Archived from the original on May 23, 2024. Retrieved December 27, 2011.
- Joint Typhoon Warning Center (August 2, 2011). "Significant Tropical Weather Advisory for the Western and Southern Pacific Ocean 2011-08-02 21z". United States Navy, United States Air Force. Archived from the original on August 5, 2012. Retrieved December 27, 2011.
- "JMA — Tropical Cyclone Advisory 030000 – Tropical depression 18". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 3, 2011.
- "JMA — Tropical Cyclone Advisory 030600 – Tropical Storm Merbok". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 3, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 01 – Tropical Depression Merbok". Archived from the original on April 30, 2001. Retrieved August 3, 2011.
- "JMA — Tropical Cyclone Advisory 051800 – Severe Tropical Storm Merbok". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 6, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 13 – Typhoon Merbok". Archived from the original on April 30, 2001. Retrieved August 6, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 16 – Typhoon Merbok". Archived from the original on April 30, 2001. Retrieved August 7, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 17 – Typhoon Merbok". Archived from the original on April 30, 2001. Retrieved August 7, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 21 – Tropical Storm Merbok". Archived from the original on April 30, 2001. Retrieved August 8, 2011.
- "JMA — Tropical Cyclone Advisory 081800 – Tropical Storm Merbok". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 9, 2011.
- Joint Typhoon Warning Center. "JTWC — Final Warning — Extratropical Storm Merbok". Archived from the original on April 30, 2001. Retrieved August 9, 2011.
- "JMA — Tropical Cyclone Advisory 091800 – Extratropical storm merbok". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved August 10, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 01 – Tropical Depression 13W". Archived from the original on April 30, 2001. Retrieved August 10, 2011.
- Staff Writer. "JMA — Tropical Cyclone Advisory 112100 (Final) – Tropical Depression 20". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved August 12, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Adivosry 09 (Final) – Tropical Depression 13W". JTWC Tropical Cyclone Advisories. Archived from the original on April 30, 2001. Retrieved August 12, 2011.
- Joint Typhoon Warning Center. "JTWC Tropical Cyclone Warning 192100 – Tropical Depression 23". Archived from the original on May 23, 2024. Retrieved August 22, 2011.
- Joint Typhoon Warning Center. "Tropical Depression 23 – Low Level Circulation Center". Archived from the original on May 23, 2024. Retrieved August 22, 2011.
- "JMA — Tropical Cyclone Advisory 211200 – Tropical Depression 23". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved August 21, 2011.
- Joint Typhoon Warning Center. "JTWC TCFA 01 on Tropical Depression 23". Archived from the original on April 30, 2001. Retrieved August 22, 2011.
- "PAGASA -Severe Weather Bulletin Number ONE — Tropical Cyclone Alert: Tropical Depression "MINA"". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on July 26, 2009. Retrieved August 22, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 01 – Tropical Depression 14W". Archived from the original on May 23, 2024. Retrieved August 23, 2011.
- "JMA — Tropical Cyclone Advisory 231200 – Tropical Storm Nanmadol". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 22, 2024. Retrieved August 23, 2011.
- "JMA — Tropical Cyclone Advisory 240600 – Severe Tropical Storm Nanmadol". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved August 24, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 07 – Tropical Storm Nanmadol". Archived from the original on April 30, 2001. Retrieved August 24, 2011.
- "JMA — Tropical Cyclone Advisory 250000 – Typhoon Nanmadol". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 25, 2011.
- "JMA — Tropical Cyclone Advisory 270300 – Typhoon Nanmadol". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved August 27, 2011.
- "JMA — Tropical Cyclone Advisory 280000 – Severe Tropical Storm Nanmadol". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 28, 2011.
- Joint Typhoon Warning Center, JTWC — Tropical Cyclone Advisory 25 – Typhoon Nanmadol
- JMA — Tropical Cyclone Advisory 291200 – Tropical Storm Nanmadol, Japan Meteorological Agency
- Joint Typhoon Warning Center, JTWC — Tropical Cyclone Advisory 31 – Tropical Storm Nanmadol
- "JMA — Tropical Cyclone Advisory 310600 – TD Downgraded From TS 1111 Nanmadol (1111)", JMA Tropical Cyclone Advisories, Japan Meteorological Agency
- Joint Typhoon Warning Center, Tropical Depression 14W (Nanmadol) Warning No. 34 Final Warning
- "Typhoon-triggered landslide kills five people in Philippines". GLOBE AND MAIL. Canada. Retrieved August 28, 2011.
- "Two fishermen missing as Philippines braces for Typhoon Nanmadol — Monsters and Critics". m&c news. Archived from the original on June 4, 2012. Retrieved August 26, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Outlook 222300 – Tropical Depression 24". Archived from the original on August 23, 2011. Retrieved August 23, 2011.
- ^ "JMA — Tropical Cyclone Advisory 230000 – Tropical Depression 22, 23, 24". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved August 23, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Formation Alert — Tropical Depression 24". Archived from the original on April 30, 2001. Retrieved August 24, 2011.
- "JMA — Tropical Cyclone Advisory 250000 – Tropical Storm Talas". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 25, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Talas". Archived from the original on April 30, 2001. Retrieved August 25, 2011.
- "JMA — Tropical Cyclone Advisory 260000 – Severe Tropical Storm Talas". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 26, 2011.
- JMA — Tropical Cyclone Advisory 291800 – Typhoon Talas, Japan Meteorological Agency
- Joint Typhoon Warning Center, JTWC — Tropical Cyclone Advisory 25 – Tropical Storm Talas
- Joint Typhoon Warning Center, JTWC — Tropical Cyclone Advisory 27 – Tropical Storm Talas
- Joint Typhoon Warning Center (September 2, 2011). "JTWC — Prognostic Reasoning for Tropical Cyclone Advisory 32 – Tropical Storm Talas". Retrieved September 2, 2011.
- "JMA — Tropical Cyclone Advisory 020600 – Severe Tropical Storm Talas". Japan Meteorological Agency. September 2, 2011. Retrieved September 2, 2011.
- "台風１２号 高知県に上陸へ". NHK. Retrieved September 3, 2011.
- Joint Typhoon Warning Center (September 4, 2011). "JTWC — Tropical Cyclone Advisory 40 – Tropical Storm Talas". Retrieved September 4, 2011.
- "台風１２号が温帯低気圧に". NHK. Retrieved September 5, 2011.
- "JMA — Tropical Cyclone Advisory 050600 – Ex-Tropical Storm Talas". Japan Meteorological Agency. September 5, 2011. Retrieved September 5, 2011.
- ^ Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-09-01 15z". United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved March 10, 2012.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-09-02 06z". United States Navy, United States Air Force. Archived from the original on May 23, 2024. Retrieved March 10, 2012.
- Joint Typhoon Warning Center (September 2, 2011). "Tropical Cyclone Formation Alert 2011-09-02 10z". United States Navy, United States Air Force, United States Air Force. Archived from the original on May 22, 2024. Retrieved January 1, 2012.
- ^ RSMC Tokyo — Typhoon Center (October 26, 2011). "Tropical Cyclone Best Track Analysis: Tropical Storm Noru 2011". Japan Meteorological Agency. Archived from the original on October 24, 2007. Retrieved January 1, 2012.
- Joint Typhoon Warning Center (September 6, 2011). "JTWC — Tropical Cyclone Warning 042200 – Tropical Depression 26". Retrieved September 6, 2011.
- "JMA — Tropical Cyclone Warning 060600 – Tropical Depression 26". Japan Meteorological Agency. September 6, 2011. Retrieved September 6, 2011.
- Joint Typhoon Warning Center (September 7, 2011). "JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Kulap". Retrieved September 7, 2011.
- "JMA — Tropical Cyclone Advisory 70300 – Tropical Storm Kulap". Japan Meteorological Agency. September 7, 2011. Retrieved September 7, 2011.
- Joint Typhoon Warning Center (September 8, 2011). "JTWC — Tropical Cyclone Advisory 03 – Tropical Storm Kulap". Retrieved September 8, 2011.
- Joint Typhoon Warning Center (September 8, 2011). "JTWC — Tropical Cyclone Advisory 05 – Tropical Storm Kulap". Retrieved September 8, 2011.
- "PAGASA — Severe Weather Bulletin Number ONE — Tropical Storm "NONOY" (KULAP)". Philippine Atmospheric, Geophysical and Astronomical Services Administration. September 8, 2011. Retrieved September 8, 2011.
- "PAGASA — Severe Weather Bulletin Number TWO (FINAL) – Tropical Storm "NONOY" (KULAP)". Philippine Atmospheric, Geophysical and Astronomical Services Administration. September 8, 2011. Retrieved September 8, 2011.
- Joint Typhoon Warning Center (September 9, 2011). "JTWC — Tropical Cyclone Advisory 07 – Tropical Storm Kulap". Retrieved September 9, 2011.
- "JMA — Tropical Cyclone Advisory 100000 – Tropical Storm Kulap". Japan Meteorological Agency. September 10, 2011. Retrieved September 10, 2011.
- Joint Typhoon Warning Center (September 9, 2011). "JTWC — Tropical Cyclone Warning 080130 – Tropical Depression". Retrieved September 9, 2011.
- "JMA — Tropical Cyclone Warning 081800 – Tropical Depression 27". Japan Meteorological Agency. September 9, 2011. Retrieved September 9, 2011.
- Joint Typhoon Warning Center (September 11, 2011). "JTWC — Tropical Cyclone Formation Alert — Tropical Depression 27". Retrieved September 11, 2011.
- Joint Typhoon Warning Center (September 11, 2011). "JTWC — Tropical Cyclone Advisory 01 – Tropical Depression 18W". Retrieved September 11, 2011.
- "PAGASA — Severe Weather Bulletin Number ONE — Tropical Depression "ONYOK"". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on May 23, 2024. Retrieved September 13, 2011.
- "PAGASA — Severe Weather Bulletin Number TWO(FINAL) – Tropical Depression "ONYOK"". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on May 23, 2024. Retrieved September 13, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 08 – Tropical Storm Roke". Archived from the original on April 30, 2001. Retrieved September 13, 2011.
- "JMA — Tropical Cyclone Advisory 131200 – Tropical Storm Roke". Japan Meteorological Agency. Archived from the original on October 14, 2008. Retrieved September 13, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 26 – Tropical Storm Roke". Archived from the original on May 23, 2024. Retrieved September 18, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 34 – Typhoon Roke". Archived from the original on May 23, 2024. Retrieved September 20, 2011.
- "台風 浜松市付近に上陸し東進". NHK. Archived from the original on September 23, 2011. Retrieved September 21, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 36 – Typhoon Roke". Archived from the original on May 23, 2024. Retrieved September 21, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 38 – Typhoon Roke". Archived from the original on May 23, 2024. Retrieved September 21, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 40 – Typhoon Roke". Archived from the original on May 23, 2024. Retrieved September 21, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 41 – Tropical Storm Roke". Archived from the original on May 23, 2024. Retrieved September 21, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 130000 – Tropical Depression 28". Archived from the original on May 23, 2024. Retrieved September 14, 2011.
- "JMA — Tropical Cyclone Warning 140000 – Tropical Depressions 28 & 29". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved September 14, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Formation Alert — Tropical Depression 28". Archived from the original on May 23, 2024. Retrieved September 15, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 01 – Tropical Depression 19W". Archived from the original on May 23, 2024. Retrieved September 15, 2011.
- "JMA — Tropical Cyclone Advisory 150600 – Tropical Storm Sonca". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved September 15, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 04 – Tropical Storm Sonca". Archived from the original on May 23, 2024. Retrieved September 15, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 08 – Tropical Storm Sonca". Archived from the original on May 23, 2024. Retrieved September 17, 2011.
- "JMA — Tropical Cyclone Advisory 170600 – Tropical Storm Sonca". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 17, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 12 – Typhoon Sonca". Archived from the original on May 23, 2024. Retrieved September 18, 2011.
- "JMA — Tropical Cyclone Advisory 180600 – Typhoon Sonca". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 18, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 17 – Typhoon Sonca". Archived from the original on May 23, 2024. Retrieved September 19, 2011.
- Joint Typhoon Warning Center (September 20, 2011). "JTWC — Tropical Cyclone Advisory 19 – Typhoon Sonca". Retrieved September 20, 2011.
- Joint Typhoon Warning Center (September 20, 2011). "JTWC — Tropical Cyclone Advisory 22 – Typhoon Sonca". Retrieved September 20, 2011.
- "JMA — Tropical Cyclone Advisory 201200 – Typhoon Sonca". Japan Meteorological Agency. September 20, 2011. Retrieved September 20, 2011.
- "JMA — Tropical Cyclone Advisory 240000 – Tropical Storm Nesat". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 24, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 06 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved September 26, 2011.
- "JMA — Tropical Cyclone Advisory 250000 – Typhoon Nesat". Japan Meteorological Agency. Archived from the original on May 22, 2024. Retrieved September 26, 2011.
- "JMA — Tropical Cyclone Advisory 252100 – Typhoon Nesat". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 26, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 14 – Typhoon Nesat". Archived from the original on April 30, 2001. Retrieved September 27, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 15 – Typhoon Nesat". Archived from the original on May 22, 2024. Retrieved September 28, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 16 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved September 28, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 18 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved September 28, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory — Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved September 30, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 22 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved September 30, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 24 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved October 1, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 26 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved October 1, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 28 – Typhoon Nesat". Archived from the original on May 23, 2024. Retrieved October 1, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 29 – Typhoon Nesat". Archived from the original on April 30, 2001. Retrieved October 1, 2011.
- "JMA — Tropical Cyclone Advisory 301800 – Typhoon Nesat". Japan Meteorological Agency. Archived from the original on May 17, 2008. Retrieved October 1, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 211500 – Tropical Storm Nesat and Tropical Depression 31". Archived from the original on May 22, 2024. Retrieved September 24, 2011.
- "JMA — Tropical Cyclone Warning 240000 – Tropical Depressions 31". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved September 24, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Formation Alert — Tropical Depression 31". Archived from the original on April 30, 2001. Retrieved September 24, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 01 – Tropical Storm Haitang". Archived from the original on April 30, 2001. Retrieved September 29, 2011.
- "JMA — Tropical Cyclone Advisory 250000 – Tropical Storm Haitang". Japan Meteorological Agency. Archived from the original on May 22, 2024. Retrieved September 29, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 04 – Tropical Storm Haitang". Archived from the original on May 22, 2024. Retrieved September 29, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 06 – Tropical Storm Haitang". Archived from the original on May 22, 2024. Retrieved September 29, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 10 – Tropical Storm Haitang". Archived from the original on May 22, 2024. Retrieved September 29, 2011.
- "JMA — Tropical Cyclone Advisory 270600 – Tropical Storm Haitang". Japan Meteorological Agency. Archived from the original on May 22, 2024. Retrieved September 29, 2011.
- ^ RSMC Tokyo — Typhoon Center (November 14, 2011). "RSMC Tropical Cyclone Best Track: Typhoon Nalgae". Japan Meteorological Agency. Archived from the original (PDF) on October 24, 2007. Retrieved December 30, 2011.
- Joint Typhoon Warning Center (September 27, 2011). "Tropical Cyclone Formation Alert 2011-09-27 06z". United States Navy, United States Air Force, United States Air Force. Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- Joint Typhoon Warning Center (September 27, 2011). "JTWC Tropical Depression 22W Warning 2011-09-27 09z". United States Navy, United States Air Force, United States Air Force. Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- RSMC Tokyo — Typhoon Center (September 27, 2011). "RSMC Tropical Cyclone Advisory: Tropical Storm Nalgae 2011-09-27 18z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Advisory 07 – Typhoon Nalgae". Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- "JMA — Tropical Cyclone Advisory 281800 – Typhoon Nalgae". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- "Severe Weather Bulletin Number ONE — Tropical Storm "QUIEL"". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on May 23, 2024. Retrieved September 29, 2011.
- "NDRRMC Update SitRep No. 13 on Typhoon "Quiel" (Nalgae)" (PDF). National Disaster Risk Reduction and Management Council. November 11, 2011. Retrieved November 30, 2011.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-10-07 06z". United States Navy, United States Air Force. Archived from the original on February 16, 2007. Retrieved March 6, 2012.
- RSMC Tokyo — Typhoon Center (November 14, 2011). "RSMC Tropical Cyclone Best Track: Tropical Storm Banyan". Japan Meteorological Agency. Archived from the original (PDF) on October 24, 2007. Retrieved December 30, 2011.
- "NDRRMC Update SitRep No. 15 on Tropical Storm "Ramon"" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. October 19, 2011. Retrieved November 29, 2011.
- Joint Typhoon Warning Center (November 5, 2011). "Significant Tropical Weather Outlook for the Western and South Pacific Oceans November 5, 2011 06z". United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved August 7, 2013.
- ^ Joint Typhoon Warning Center (December 3, 2011). "Significant Tropical Weather Outlook for the Western and South Pacific Oceans December 3, 2011 06z". United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved August 7, 2013.
- ^ Joint Typhoon Warning Center. "Tropical Depression 25W Best Track Analysis". United States Navy, United States Airforce. Archived from the original on July 2, 2012. Retrieved August 7, 2013.
- Joint Typhoon Warning Center (December 4, 2011). Tropical Cyclone 25W Warning 1; December 4, 2011 15z (Report). United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved August 5, 2013.
- Joint Typhoon Warning Center (December 5, 2011). Tropical Cyclone 25W Warning 3; December 5, 2011 09z (Report). United States Navy, United States Air Force. Archived from the original on May 23, 2024. Retrieved August 5, 2013.
- Joint Typhoon Warning Center. "Tropical Depression 26W Best Track Analysis". United States Navy, United States Airforce. Archived from the original on July 2, 2012. Retrieved August 7, 2013.
- "Death toll from tropical storm climbs to 1,236 in Philippines". Philippines: English.news.cn. December 25, 2011. Archived from the original on April 22, 2012. Retrieved December 25, 2011.
- ^ "SitRep No.11 re Effects of Tropical Storm "SENDONG" (WASHI)" (PDF). Philippines: National Disaster Risk Reduction and management council. December 20, 2011. Archived from the original (PDF) on January 19, 2012. Retrieved December 20, 2011.
- "Death toll from Philippine storm reaches 569; hundreds missing". CNN. December 18, 2011. Retrieved December 18, 2011.
- "JMA WWJP25 Warning and Summary 2011-05-31 18z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved March 5, 2012.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Oceans 2011-05-30 06z". United States Navy, United States Air Force. Archived from the original on February 16, 2007. Retrieved December 28, 2011.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-01 14z". United States Navy, United States Airforce. Archived from the original on March 5, 2010. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-06-01 18z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved December 28, 2011.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-02 06z". United States Navy, United States Air Force. Archived from the original on May 22, 2024. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-06-14 18z". Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved March 10, 2012.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-14 06z". United States Navy, United States Air Force. Archived from the original on February 16, 2007. Retrieved March 10, 2012.
- Joint Typhoon Warning Center. "Significant Tropical Weather Outlook for the Western and South Pacific Ocean 2011-06-15 20z". United States Navy, United States Air Force. Archived from the original on February 16, 2007. Retrieved March 10, 2012.
- "JMA WWJP25 Warning and Summary 2011-07-16 00z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-07-16 06z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 5, 2012.
- Joint Typhoon Warning Center. "JTWC Tropical Cyclone Warning 190030 – Pre-Tropical Depression 22". Archived from the original on May 23, 2024. Retrieved August 21, 2011.
- Joint Typhoon Warning Center. "JTWC Tropical Cyclone Warning 200100 – Pre-Tropical Depression 22". Archived from the original on May 23, 2024. Retrieved August 21, 2011.
- "JMA — Tropical Cyclone Advisory 200600 – Tropical Depression 22". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved August 20, 2011.
- "JMA — Tropical Cyclone Advisory 221200 – Tropical Depression 22". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 2, 2001. Retrieved August 22, 2011.
- Joint Typhoon Warning Center. "JTWC — Tropical Cyclone Warning 221430 – Tropical Depression 22". Archived from the original on February 16, 2007. Retrieved August 22, 2011.
- "JMA — Tropical Cyclone Advisory 250000 – Tropical Depression 22". JMA Tropical Cyclone Advisories. Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved August 25, 2011.
- ^ "JMA WWJP25 Warning and Summary 2011-09-14 00z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-09-15 18z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-09-16 00z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 5, 2012.
- "JMA WWJP25 Warning and Summary 2011-12-24 12z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 4, 2012.
- "JMA WWJP25 Warning and Summary 2011-12-24 18z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 12, 2012.
- "JMA WWJP25 Warning and Summary 2011-12-25 00z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 12, 2012.
- "JMA WWJP25 Warning and Summary 2011-12-31 06z". Japan Meteorological Agency. Archived from the original on May 22, 2024. Retrieved March 4, 2012.
- "JMA WWJP25 Warning and Summary 2011-12-31 18z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 4, 2012.
- "JMA WWJP25 Warning and Summary 2012-01-01 06z". Japan Meteorological Agency. Archived from the original on May 23, 2024. Retrieved March 12, 2012.
- "JMA WWJP25 Warning and Summary 2012-01-01 12z". Japan Meteorological Agency. Archived from the original on May 26, 2024. Retrieved March 12, 2012.
- ^ Padgett, Gary. "Monthly Tropical Cyclone summary December 1999". Australian Severe Weather. Archived from the original on February 9, 2002. Retrieved August 28, 2012.
- ^ the Typhoon Committee (February 21, 2012). "Typhoon Committee Operational Manual 2012" (PDF). World Meteorological Organization. pp. 37–38. Archived (PDF) from the original on August 1, 2013.
- ^ "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on December 28, 2016. Retrieved January 20, 2016.
- Flores, Helen (September 1, 2011). "3 destructive cyclones expected this month — Pagasa". The Philippine Star. Archived from the original on September 9, 2012. Retrieved December 31, 2011.
- Romero, Alexis (October 6, 2011). "Combined death toll from 'Pedring,' 'Quiel' rises to 76". The Philippine Star. Archived from the original on September 8, 2012. Retrieved October 6, 2011.
- Unattributed (December 23, 2011). "Government will no longer use Sendong to name typhoons". Sun Star Manila. Archived from the original on August 4, 2013. Retrieved December 26, 2011.
- "NDRRMC Update SitRep No. 5 on Tropical Storm "Dodong"" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. June 10, 2011. Archived from the original (PDF) on October 7, 2011. Retrieved June 10, 2011.
- National Weather Service Forecast Office Guam; National Climatic Data Center (2012). "Storm Events Database: Guam: Tropical Storm Sanvu". National Oceanic and Atmospheric Administration. Archived from the original on December 20, 2014.
- "Final Report re Effects of Southwest Monsoon and Typhoon "Butchoy" (Guchol)" (PDF). National Disaster Risk Reduction and Management Council. June 26, 2012. Retrieved August 7, 2012.
- "June 2012 Global Catastrophe Recap" (PDF). AON Benfield. July 2012. Archived from the original (PDF) on August 5, 2012. Retrieved August 7, 2012.
- "Global storm activity increases in July as the Atlantic hurricane season approaches peak period, According to Aon Benfield Study". CPI Financial. August 23, 2011. Archived from the original on October 4, 2013. Retrieved February 25, 2012.
- "NDRRMC Update SitRep No. 7 on Tropical Storm "Juaning"" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. July 28, 2011. Archived from the original (PDF) on October 7, 2011. Retrieved July 28, 2011.
- "NDRRMC Update SitRep No. 12 on Typhoon "Kabayan" (Muifa)" (PDF). National Disaster Risk Reduction and Management Council. National Disaster Coordinating Council. August 4, 2011. Archived from the original (PDF) on October 7, 2011. Retrieved August 4, 2011.
- "Severe Weather Bulletin number three, Tropical Cyclone Alert: Tropical Depression "Lando" issued at 11 am, 2011-08-01". Philippine Atmospheric, Geophysical and Astronomical Services Administration. August 1, 2011. Archived from the original on May 23, 2024. Retrieved December 27, 2011.
- "2011 Top 10 Philippine Destructive Tropical Cyclones (PDF)(Report)" (PDF). National Disaster Risk Reduction and Management Council. Archived from the original (PDF) on October 17, 2012. Retrieved December 31, 2011.
- "Nanmadol causes est. $200 TO $500 million in Taiwan". EQECAT. Retrieved September 2, 2011.
- ""南玛都"致福建经济损失5.32亿元 无人员伤亡". China Press. Retrieved September 1, 2011.
- "台風12号による被害状況及び消防機関の活動状況等について(第14報)" (PDF). Fire and Disaster Management Agency. Archived from the original (PDF) on September 18, 2018. Retrieved October 3, 2011.
- Lai, Iris (December 15, 2011). "Japanese Nonlife Insurers Report 1.3 Trillion Yen in Claims Related to Quake, Typhoons". Insurance News. Retrieved December 18, 2011.
- Ramos, Benito T. (October 11, 2011). Situational Report No.26 re Typhoon "Pedring" (Nesat) (PDF) (Report). National Disaster Risk Reduction and Management Center. Archived from the original (PDF) on March 26, 2012. Retrieved December 31, 2011.
- Ramos, Benito T. (December 30, 2011). 2011 Top 10 Philippine Destructive Tropical Cyclones (PDF) (Report). National Disaster Risk Reduction and Management Center. Archived (PDF) from the original on October 17, 2012. Retrieved December 31, 2011.
- ""纳沙"致广东省直接经济损失增至28.6亿元". China Press. Retrieved October 1, 2011.
- "台风给海南造成严重经济损失 全省转移45万余人". China Press. Retrieved September 30, 2011.
- ""纳沙"致广西306万人受灾 4人死亡1人失踪". China Press. Retrieved October 3, 2011.
- "Nalgae leaves 18 dead in the Philippines". Protect the Environment. Archived from the original on April 16, 2012. Retrieved June 4, 2012.
- Padua, David M (2011). "Tropical Cyclone Logs: Sendong (Washi) 2011". Typhoon 2000. Retrieved December 31, 2011.
- Ramos, Benito T. Final Report on the Effects and Emergency Management re Tropical Storm "Sendong" (Washi) (PDF) (Report). National Disaster Risk Reduction and Management Center. Archived from the original (PDF) on January 16, 2013. Retrieved February 24, 2012.
External links
- China Meteorological Agency
- Digital Typhoon
- Hong Kong Observatory
- Japan Meteorological Agency
- Joint Typhoon Warning Center
- Korea Meteorological Administration
- Malaysian Meteorological Department
- National Weather Service Guam
- Philippine Atmospheric, Geophysical and Astronomical Services Administration
- Taiwan Central Weather Bureau
- TCWC Jakarta
- Thai Meteorological Department
- Typhoon2000
- Vietnam's National Hydro-Meteorological Service
| Tropical cyclones of the 2011 Pacific typhoon season | ||
|---|---|---|
| TD01W TDAmang TSAere VITYSongda TDTD TSSarika TDTD TSHaima STSMeari TDGoring VSTYMa-on TSTokage TDTD TDTD STSNock-ten VSTYMuifa TDLando STSMerbok TDTD TD13W TDTD TDTD VSTYNanmadol STSTalas TSNoru TSKulap VSTYRoke TYSonca TDTD TYNesat TSHaitang VSTYNalgae TSBanyan TDTD TD24W TD25W TD26W STSWashi TDTD TDTD | |
| 2010–2019 Pacific typhoon seasons | |
|---|---|
| Tropical cyclones in 2011 | |
|---|---|
| Cyclones | |
| Hurricanes | |
| Typhoons | |
| Non-seasonal lists | |