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Tropical Storm Isaias
Current storm status Tropical storm (1-min mean)
File:20200730.0900.GOES16.ir.09L.ISAIAS.ATL.JULY.30.pngSatellite image Forecast map
As of:	11:00 p.m. AST (03:00 UTC July 30) July 29
Location:	15°48′N 67°00′W / 15.8°N 67.0°W / 15.8; -67.0 (Tropical Storm Isaias) ± 75 nm About 155 mi (250 km) S of Ponce, Puerto Rico About 265 mi (430 km) SE of Santo Domingo, Dominican Republic
Sustained winds:	50 kt (60 mph; 95 km/h) (1-min mean) gusting to 50 kt (60 mph; 95 km/h)
Pressure:	1003 mbar (hPa; 29.62 inHg)
Movement:	WNW at 17 kt (20 mph; 31 km/h)
See more detailed information.

Tropical Storm Isaias is a currently active tropical cyclone threatening landfall in the Dominican Republic. The ninth Tropical storm of the 2020 Atlantic hurricane season, Isaias originated from a tropical wave off the coast of Africa that was first tracked by the National Hurricane Center on July 23, 2020. The tropical wave gradually became more organized, and intensified into Tropical Storm Isaias on July 30. This marked the earliest ninth named storm on record, surpassing 2005's Hurricane Irene by six days.

Numerous Tropical Storm Watches and warnings were issued for the Lesser Antilles, Greater Antilles, the Bahamas, Cuba, and Florida.

Meteorological history

The National Hurricane Center first began tracking a vigorous tropical wave off the coast of Africa on July 23. The wave gradually organized and became better defined, developing a broad area of low pressure. Though the circulation was broad and disorganized, convection continued to increase over the system. Although the system still lacked a well-defined center, its threat of tropical-storm-force winds to land areas prompted its designation as a potential tropical cyclone at 15:00 UTC on July 28. The system moved just south of Dominica on July 29, and at 03:00 UTC on the following day, it organized sufficiently to become a tropical cyclone. Due to its precursor disturbance already having gale-force winds, it was immediately declared a tropical storm and given the name Isaias. When Tropical Storm Isaias formed, it became the earliest ninth named storm on record, shattering the record of Hurricane Irene (2005) by 6 days.

Preparations and Impact

In anticipation of the storm, the state of Florida closed COVID-19 testing sites due to potential impacts from Tropical Storm Isaias on July 30.

Current storm information

For the latest official information, see:

• The NHC's latest public advisory on Tropical Storm Isaias
• The NHC's latest forecast advisory on Tropical Storm Isaias
• The NHC's latest forecast discussion on Tropical Storm Isaias

Watches and warnings

Template:HurricaneWarningsTable

References

1. "Five-Day Graphical Tropical Weather Outlook". nhc.noaa.gov. July 23, 2020. Retrieved 2020-07-28.
2. "Five-Day Graphical Tropical Weather Outlook". nhc.noaa.gov. July 26, 2020. Retrieved 2020-07-28.
3. "Tropical Storm Isaias Forecast Discussion". www.nhc.noaa.gov. Retrieved 2020-07-30.
4. Holcombe, Madeline (July 30, 2020). "Tropical Storm Isaias is heading heading toward the US, forcing Florida to close state-run testing sites". cnn.com. Retrieved 2020-07-30.