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By September 4, 2020 utility workers had installed over 3,400 new poles along with 400 mi (640 km; 640,000 m) of wiring in the Cedar Rapids area after repairing most of the main electrical infrastructure in the city. As of November 17, 2020, Alliant Energy was still working on restoring street lights in the area, many still hampered by debris or broken trees.

On November 9, 2020 Dr. Melanie Giesler, a local physician, said increased allergies in the area were likely due to the derecho damage, spurred on by dust, debris, and mold growing on dead plant matter.

In July 2022, The Gazette reported that nearly two years after the derecho, owners of homes with historic preservation concerns were still repairing antique windows damaged by the storm. Local groups and trusts were reported to have organized workshops for affected homeowners about how to properly restore this type of construction.

Debris collection and tree removals

On August 21, Marion city officials announced 98 percent of its streets were cleared and over 7,000 truckloads of debris had been removed. A month after the storm, Cedar Rapids had completed the first pass of storm debris collection on only 37.5 percent of its streets. By September 28, the city had removed 53,598 truckloads of debris for an approximate total of 230,000 short tons (210,000 t).

As of November 24, 2020, cleanup was ongoing with the city currently working on the final public collection of non-organic debris. Collection of organic/tree debris is continuing indefinitely with the city having removed 2.8 million cubic yards (2.1 million cubic metres) of organic debris to date; the trimming of damaged tree limbs in the public right of way is 73 percent complete.

On December 3, Taylor Burgin, Cedar Rapids' construction engineering manager, said that city crews and contractors are beginning a thorough cleanup of city parks — this is expected to add an estimated 1.5 million cubic yards (1.1 million cubic metres) to city removal metrics. Burgin also noted the city has removed around 2,000 trees, but needed at least 10,000 more to complete citywide cleanup.

Des Moines metropolitan area

In the Des Moines metropolitan area, over 132,000 customer experienced outages, according to MidAmerican. The city said on August 21 that cleanup was slower than desired, estimating that damage cleanup could take up to six weeks. It planned to lease equipment from contractors to accelerate cleanup.

The city of Ankeny estimated it would take four to six weeks to fully clean up debris. A Hy-Vee grocery store there was found by the Iowa Department of Natural Resources to have illegally dumped 800 US gallons (3,000 L) of spoiled milk into storm sewers, contaminating a local waterway. The company assisted the state in cleanup efforts, blaming misinformed employees. Buccaneer Arena, home ice of the Des Moines Buccaneers minor-league hockey team, sustained significant roof damage.

Marshalltown

Marshalltown suffered extensive property damage. Over a hundred cars parked near a factory had their windows blown out. Reports described 99 miles per hour (160 kilometers per hour; 44 meters per second) winds, roofs being ripped off, and loose wood debris embedded in the sides of buildings. One week after the storm, nearly 7,000 residents of the city were still waiting for power restoration; 99 percent restoration was achieved on Aug 23. The damage to public parks in the city and surrounding Marshall County was "extensive", particularly to trees.

Damage metrics released on September 1 showed nearly 2,800 buildings were damaged or destroyed in the storm, more than the 2018 EF3 tornado which hit the city. City cleanup for the derecho is estimated around $4 million, of which FEMA and the Iowa Homeland Security and Emergency Management will assist for reimbursement. By August 20, the city had hauled away 66,000 cubic yards (50,000 m) of debris, almost triple the amount of the 2018 tornado. By late October, Justin Nickel, the city's public works director, said debris collection and cleanup were nearly complete for the city.

Marshalltown Veteran's Memorial Coliseum, a historic city sports venue, is reopening soon as of November 30, 2020 after being severely damaged by the 2018 tornado and later impacted by the derecho. As of December 8, 2020, Riverside Cemetery, a century-old burial site located in the city, remains littered with debris as the city struggles to raise money for its care.

Illinois

Across the state of Illinois, high winds and fifteen weak tornadoes, the majority of the derecho's tornadoes (see § Confirmed tornadoes), caused variable damage to buildings, trees, and vehicles. Officials reported a dozen individuals directly injured by the storm across the state. A month after the storm, Chicago was still cleaning up storm damaged areas. In city parks, over 500 trees fell. The city fielded over 12,000 emergency calls regarding trees in the city after the storm hit.

Confirmed fatalities

In Fort Wayne, Indiana, a woman was killed when high winds tipped over her mobile home. In Poweshiek County, Iowa, Emergency Management confirmed the deaths of two: a Malcom woman in her 40s killed when a tree fell on her porch and a Brooklyn man in his 40s, a city employee and electrician, killed by electrocution from a downed power line he was attempting to repair. The Linn County Sheriff's Office confirmed a 63-year-old man died from a falling tree while biking.

Responses and criticism

In the week after the storm, Iowa elected officials such as US Senators Chuck Grassley and Joni Ernst, US Representative Abby Finkenauer, and Governor Kim Reynolds called for and worked to secure a federal disaster declaration from President Donald Trump. The declaration was formally requested by Reynolds on August 16 for nearly $4 billion in federal aid.

The following day, Trump announced he had partially approved Reynolds's request, but did not approve the requested FEMA Individual Assistance Program, which Reynolds's office says "provides disaster-impacted homeowners and businesses with programs and services to maximize recovery, including assistance with housing, personal property replacement, medical expenses and legal services". An amended declaration to include Individual Assistance worked its way through Washington, according to Reynolds. The White House approved it for Linn County on August 20.

On September 1, the governor's Office announced the addition of 10 counties approved for FEMA Individual Assistance. On September 3, US Secretary of Agriculture Sonny Perdue declared natural disasters in eighteen, opening up Farm Service Agency and other USDA disaster relief programs. On September 11, it was announced FEMA added seven Iowa counties to the August 17 federal disaster declaration increasing the total counties to 23, allowing for Public Assistance Program use in those counties; a separate declaration was declared for the Sac and Fox Tribe of the Mississippi in Iowa as well.

Official visits

On August 13, Vice President Mike Pence held two campaign rallies in Iowa. He promised to help Iowa rebuild, but did not tour areas damaged by the storm.

On August 14, Reynolds arrived in Cedar Rapids, Iowa with more than 100 Iowa National Guard members, activated to help repair the damage.

On August 15, Finkenauer toured damage in Marshalltown.

On August 17, Pete Gaynor, Administrator of FEMA, traveled to Iowa to meet with Governor Reynolds about the disaster.

On August 18, Trump arrived at midday in Cedar Rapids, joining a private meeting with Iowa senators Grassley, Ernst and Cedar Rapids Mayor Brad Hart. At the meeting, Hart begged Trump to approve the Individual Assistance Program. Trump remained at the airport and did not interact with the public, tour damage, or assist in recovery efforts during his visit.

On August 19, Naig met with farmers in Marion to personally assess the damage. Ernst toured damaged in Marshalltown.

On September 2, Grassley and Ernst fielded questions from Cedar Rapids-area non-profit organizations.

On September 3, US Secretary of Agriculture Sonny Perdue underwent an Iowa National Guard-hosted aerial tour of crop damage in Iowa along with Reynolds, Ernst, and Naig.

Local, non-government, or individual assistance efforts

On August 14, the city of Cedar Rapids set up five resource centers to distribute basic necessities to the public. These centers were later shut down on August 31. Many local businesses, private individuals, religious groups, and non-profit organizations, such as Cedar Valley Black Lives Matter, The Salvation Army and Tyson Foods, and United Way, raised money online or provided relief efforts on their own, distributing food, fuel, toiletries, or assisting in debris removal.

Mid-American Energy, one of Iowa's two major electric utilities, gave away bagged ice in Cedar Rapids on August 20–21. Operation BBQ Relief, a disaster relief agency specializing in barbecue, deployed to Cedar Rapids starting August 16, providing over 45,000 meals to residents as of August 21, earning praise from politicians. Local non-profits told Iowa's senators that assisting the region has been difficult due to the COVID-19 pandemic significantly reducing their donations and funding. On November 14, a large replanting campaign was announced that would begin in the spring of 2021.

Criticism

Lack of news coverage

Local news media were hard-pressed to provide reporting under disaster conditions, limiting national news coverage of the storm. KCRG-TV anchor Beth Malicki was especially prominent in speaking out on awareness of the situation. On August 13, Cedar Rapids Mayor Hart gave an interview where he rejected requesting National Guard assistance, uncertain of what it could do.

Lack of response and assistance

On August 14, Ashton Kutcher, originally from Cedar Rapids, criticized the lack of federal response and aid. He called on Pence and Trump to aid the affected areas. The same day, Iowa state officials were questioned about why it took three days to begin aid effort. General Benjamin Corell, commander of the Iowa National Guard, said they first received local requests for help on August 13.

Residents of Cedar Rapids had mixed emotions regarding official responses and assistance. For many, they felt ignored for days after the storm and offered too-little, too-late by the non-local support. Some impoverished or less-affluent neighborhood residents said they felt neglected, abandoned, or given lower priority among utility and government assistance. Many grassroots efforts began hours after the storm subsided, with residents lending support through mutual aid, and trying to take care of the least fortunate, but finding working with government and assistance organizations very disheartening.

The lack of electricity, telecommunications, and ability to travel led to the delays in assistance according to both official and non-government organizations. These explanations did not reassure storm-battered populations. Tamara Marcus, activist with Cedar Rapids Advocates for Social Justice, a Black Lives Matter organization, said "We need to ask ourselves, 'Why is it that each time we have a disaster or pandemic, the most-vulnerable are the worst impacted, particularly communities of color?' " during a September 2 forum with Ernst and Grassley. Residential damage doubled the homeless population in the Cedar Rapids area as some landlords evicted residents from unsafe apartment complexes.

Role of politicians

Abby Finkenauer, then-US Representative for Iowa's 1st congressional district (which encompasses Cedar Rapids and other hard-hit areas), used her local office for an assistance event, personally handing out essentials such as food, water, and toiletries until supplies ran out. Finkenauer's challenger in the 2020 United States House of Representatives elections, then-Iowa State Representative Ashley Hinson criticized her opponent for showing images of these events in a campaign ad, with the Republican Party of Iowa calling it "disgraceful". The Democratic Congressional Campaign Committee returned the criticism, saying that while Hinson had released a stereotypical ad and posed for storm-related photo ops, Finkenauer actually worked on doing something meaningful at the time. Hinson has since collaborated with local religious and charitable groups.

Ernst and her Democratic challenger in that year's election, Theresa Greenfield, both provided assistance. Greenfield handed out supplies, served food, and toured damage. Ernst helped distribute food with local charities including Meals on Wheels. Neither politician saw the disaster assistance as optional. Reynolds and Hinson both visited the August 21 Operation BBQ event.

Political science professors in the state commented. Tim Hagle from the University of Iowa said the key is "to strike the balance between political grandstanding — or opportunism — and a genuine desire to help, which also helps you politically". Chris Larimer of the University of Northern Iowa concurred, adding that practical help is more likely to earn voter support. At Cornell College, Megan Goldberg said "an elected official wants to claim credit for disaster relief that is effective, while avoiding blame for any mismanagement of disaster relief", concluding that "even a candidate or official who genuinely wants to visit a site — either to help or to gather information — has to think about how the visit can be spun to his or her political advantage, and how to reply to criticisms of such visits. But that's the way it often is these days."

Possible impact of climate change

The severity of the storm raised the question of whether climate change intensified it. A variety of climate experts from Georgia Tech, Colorado University, North Carolina State, and other institutions told the Associated Press, in the wake of the derecho, 2020 wildfire season, and 2020 Atlantic hurricane season, that more intense natural disasters like these are consistent with climate change.

Climate change is a possible cause of the intensity of derechos overall, said Iowa State University and National Weather Service (Des Moines) scientists; experts disagreed if it was responsible for this particular storm. The NWS said it was atypical for such a severe storm to not appear in the previous day's weather models. Additionally, NWS research into derechos indicates weather patterns in the region to be shifting towards the poles, which might be a result of climate change. The high damage estimate aligns with analysis showing increases in the costs of natural disasters due as a result of climate change-driven storm intensity.

Official notices and records

The Storm Prediction Center (SPC) did not initially foresee an event of this magnitude, primarily due to sporadic model solutions, more specifically the large variance in intensity, location, and coverage of this derecho. During the 06:00 UTC convective outlook update, a slight risk for severe thunderstorms was introduced in an area spanning approximately from Kansas to central Illinois due to other severe weather potential, with lower threats in the area eventually hit by the derecho. As model guidance became clearer during the overnight hours, parts of Iowa and Illinois were put under an enhanced risk at 13:00 UTC before the region was further upgraded to a moderate risk at 16:30 UTC once the derecho was clearly underway and expected to continue.

Official NWS Storm Prediction Center publications

Severe Weather Watch Bulletins

1. Converted to UTC from CDT (#424-430) and EDT (#431)
2. SVA is the SAME code for a Severe Thunderstorm Watch

Mesoscale Discussions

1. Converted to UTC from CDT (all discussions)

Highest recorded winds

1. ^ In vicinity.

Confirmed tornadoes

1. All dates are based on the time zone where the tornado touched down; however, all times are in Coordinated Universal Time for consistency.
2. The listed rating for this tornado is EF0, but the event narrative describes an EFU rating.

See also

• List of natural disasters in the United States
• List of derecho events
• 1998 Corn Belt derecho
• May 2009 Southern Midwest derecho
• July 2011 Midwest Derecho
• June 2012 North American derecho
• Tornadoes of 2020

Notes

1. Benton, Boone, Cedar, Jasper, Marshall, Polk, Poweshiek, Scott, Story, and Tama counties
2. Benton, Boone, Cedar, Clinton, Dallas, Guthrie, Hamilton, Hardin, Jasper, Johnson, Jones, Linn, Marshall, Polk, Poweshiek, Scott, Story, and Tama counties
3. Greene, Grundy, Guthrie, Hardin, Iowa, Jackson, and Washington counties
4. Benton, Boone, Cedar, Clinton, Dallas, Greene, Grundy, Guthrie, Hardin, Iowa, Jackson, Jasper, Johnson, Jones, Linn, Marshall, Muscatine, Polk, Poweshiek, Scott, Story, Tama, and Washington counties

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104. ^ Cite error: The named reference NWS-DVN was invoked but never defined (see the help page).
105. ^ Cite error: The named reference :2 was invoked but never defined (see the help page).
106. ^ Cite error: The named reference :3 was invoked but never defined (see the help page).
107. ^ Cite error: The named reference :8 was invoked but never defined (see the help page).
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External links

National Weather Service regional office summaries:

• August 10, 2020 Derecho (NWSFO Des Moines, Iowa)
• Midwest Derecho - August 10, 2020 (NWSFO Quad Cities, Iowa/Illinois)
• August 10, 2020: Derecho Brings Widespread Severe Wind Damage Along with Several Tornadoes (NWSFO Chicago, Illinois)
• Event Summary for August 10, 2020 Derecho (NWSFO Northern Indiana)

• Derechos in the United States
• History of Cedar Rapids, Iowa
• Tornadoes in Iowa
• Tornadoes in Wisconsin
• Tornadoes in Illinois
• Tornadoes in Indiana
• F0 and F1 tornadoes
• 2020 in Iowa
• 2020 in Illinois
• 2020 in Indiana
• 2020 in Michigan
• 2020 in Wisconsin
• 2020 meteorology
• 2020 natural disasters in the United States
• August 2020 events in the United States
• Tornado outbreaks