National Storms

August 2020 storm reports: hail, wind and tornadoes

IndependentNot affiliated with NOAA or the National Weather Service.

In August 2020, 974 hail, 3,262 damaging-wind and 181 tornado reports were logged on 31 storm days across 49 states. The largest hail reported was 4.50″ (softball size) in Pennington County, SD on August 8, 2020. The most hail reports came on August 16, 2020 (103). Tornadoes killed 3. Radar estimated hail of 1 inch or larger on 31 days; the widest swath, on August 16, 2020, covered 7,284 square miles.

Source: NOAA Storm Prediction Center storm reports; NOAA MRMS radar hail estimates (MESH) via the Iowa Environmental Mesonet. Data through November 6, 2026. Methodology

← July 2020 All 2020 storm days September 2020 →

974hail reports
3,262wind reports
181tornado reports
4.50″largest hail
31storm days
31days with 1″+ radar hail
Aug 1: 14Aug 2: 9Aug 3: 16Aug 4: 51Aug 5: 49Aug 6: 25Aug 7: 25Aug 8: 49Aug 9: 80Aug 10: 51Aug 11: 28Aug 12: 11Aug 13: 44Aug 14: 66Aug 15: 50Aug 16: 103Aug 17: 8Aug 18: 12Aug 19: 18Aug 20: 8Aug 21: 13Aug 22: 13Aug 23: 36Aug 24: 34Aug 25: 14Aug 26: 29Aug 27: 26Aug 28: 19Aug 29: 20Aug 30: 22Aug 31: 31Aug 1Aug 4Aug 7Aug 10Aug 13Aug 16Aug 19Aug 22Aug 25Aug 28Aug 31max 103
Hail reports by day, August 2020

Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.

Biggest storm days of August 2020

DayHailWindTornadoLargest hailStatesRadar 1″+ areaRadar max
Aug 10, 202051721272.50″213,715 mi²4.00″
Aug 27, 202026398222.00″252,375 mi²4.32″
Aug 28, 20201923262.00″21532 mi²4.50″
Aug 16, 202010314233.00″127,284 mi²3.44″
Aug 25, 20201422001.25″19356 mi²5.60″
Aug 14, 20206699314.00″174,165 mi²4.78″
Aug 9, 20208090133.00″182,783 mi²3.28″
Aug 29, 20202014432.00″161,060 mi²4.17″
Aug 3, 20201694302.50″17749 mi²2.46″
Aug 6, 20202510422.00″181,648 mi²3.07″

Largest hail reported in August 2020

DaySizeLocation
Aug 8, 20204.50″ (softball)Pennington County, SD
Aug 26, 20204.50″ (softball)Mellette County, SD
Aug 8, 20204.00″ (grapefruit)Pennington County, SD
Aug 14, 20204.00″ (grapefruit)Stanton County, KS
Aug 14, 20204.00″ (grapefruit)Jewell County, KS
Aug 23, 20204.00″ (grapefruit)Brown County, SD
Aug 23, 20203.75″ (teacup)Dickey County, ND
Aug 15, 20203.25″ (teacup)Box Butte County, NE
Aug 9, 20203.00″ (teacup)Todd County, SD
Aug 14, 20203.00″ (teacup)Clay County, NE

Storm reports by state, August 2020

StateHailWindTornadoLargest hail
Pennsylvania633121.25″
Illinois13254152.00″
Minnesota118116312.75″
South Dakota96154124.50″
Texas6115722.00″
New York1818162.00″
Kansas888624.00″
Iowa1414651.75″
Colorado1123152.50″
Georgia1512602.50″
Nebraska923963.25″
Oklahoma587702.75″
Virginia6117102.00″
Indiana01194–
New Jersey111331.00″
Ohio1310001.25″
North Dakota702873.75″
Wisconsin336251.50″
Alabama88551.00″
Missouri138302.50″
West Virginia68001.25″
Maryland471101.75″
Florida175452.00″
Massachusetts126111.75″
Michigan145522.00″
Arizona125401.50″
Montana104701.75″
Connecticut53871.75″
Arkansas23981.75″
North Carolina134131.00″
South Carolina54211.00″
Maine103701.50″
Mississippi14212.00″
Delaware0314–
Tennessee23020.88″
Wyoming171611.75″
New Hampshire62021.25″
Kentucky12400.75″
New Mexico61612.00″
California31631.75″
Louisiana21701.00″
Vermont1801.00″
Oregon2501.00″
Nevada060–
Rhode Island050–
Utah040–
District of Columbia020–
Idaho020–
Washington010–

Every storm day in August 2020

Aug 1 Aug 2 Aug 3 Aug 4 Aug 5 Aug 6 Aug 7 Aug 8 Aug 9 Aug 10 Aug 11 Aug 12 Aug 13 Aug 14 Aug 15 Aug 16 Aug 17 Aug 18 Aug 19 Aug 20 Aug 21 Aug 22 Aug 23 Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 Aug 29 Aug 30 Aug 31

A storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Read more about NOAA storm reports.

Guide: Storm reports: preliminary vs final