National Storms

August 2021 storm reports: hail, wind and tornadoes

IndependentNot affiliated with NOAA or the National Weather Service.

In August 2021, 733 hail, 3,009 damaging-wind and 154 tornado reports were logged on 31 storm days across 48 states. The largest hail reported was 4.50″ (softball size) in Pennington County, SD on August 26, 2021. The most hail reports came on August 7, 2021 (81). Radar estimated hail of 1 inch or larger on 31 days; the widest swath, on August 28, 2021, covered 3,834 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 2021 All 2021 storm days September 2021 →

733hail reports
3,009wind reports
154tornado reports
4.50″largest hail
31storm days
31days with 1″+ radar hail
Aug 1: 13Aug 2: 2Aug 3: 1Aug 4: 5Aug 5: 27Aug 6: 11Aug 7: 81Aug 8: 0Aug 9: 33Aug 10: 42Aug 11: 10Aug 12: 64Aug 13: 12Aug 14: 67Aug 15: 20Aug 16: 5Aug 17: 3Aug 18: 3Aug 19: 45Aug 20: 7Aug 21: 10Aug 22: 42Aug 23: 11Aug 24: 19Aug 25: 14Aug 26: 28Aug 27: 33Aug 28: 46Aug 29: 3Aug 30: 76Aug 31: 0Aug 1Aug 4Aug 7Aug 10Aug 13Aug 16Aug 19Aug 22Aug 25Aug 28Aug 31max 81
Hail reports by day, August 2021

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

Biggest storm days of August 2021

DayHailWindTornadoLargest hailStatesRadar 1″+ areaRadar max
Aug 11, 202110507121.75″221,208 mi²4.94″
Aug 10, 20214230542.75″242,105 mi²3.56″
Aug 12, 20216427511.75″262,944 mi²2.78″
Aug 13, 20211230011.75″23502 mi²5.26″
Aug 28, 202146177194.00″133,834 mi²3.05″
Aug 26, 20212814104.50″251,392 mi²2.65″
Aug 27, 20213312452.75″212,838 mi²4.61″
Aug 7, 2021817733.50″183,295 mi²3.24″
Aug 30, 2021767593.00″133,819 mi²3.69″
Aug 14, 2021677502.75″181,486 mi²3.56″

Largest hail reported in August 2021

DaySizeLocation
Aug 26, 20214.50″ (softball)Pennington County, SD
Aug 28, 20214.00″ (grapefruit)Lyon County, IA
Aug 28, 20213.75″ (teacup)Murray County, MN
Aug 5, 20213.50″ (teacup)Minnehaha County, SD
Aug 7, 20213.50″ (teacup)Greeley County, KS
Aug 7, 20213.50″ (teacup)Greeley County, KS
Aug 28, 20213.50″ (teacup)Murray County, MN
Aug 9, 20213.00″ (teacup)Wells County, ND
Aug 26, 20213.00″ (teacup)Pennington County, SD
Aug 28, 20213.00″ (teacup)Swift County, MN

Storm reports by state, August 2021

StateHailWindTornadoLargest hail
Virginia932931.75″
Pennsylvania929771.75″
South Dakota15114364.50″
Illinois12209161.75″
Kansas10712913.50″
Michigan1021722.75″
Ohio717831.00″
Nebraska1047502.50″
Minnesota43108163.75″
Iowa27104184.00″
North Carolina1411741.75″
Indiana811801.25″
Maryland112301.00″
Wisconsin2262112.50″
Arizona128102.50″
North Dakota602663.00″
New York58501.00″
Utah66502.00″
Missouri125711.75″
Colorado481832.00″
Georgia24681.00″
South Carolina141120.88″
West Virginia15200.75″
Tennessee43811.00″
Texas171922.00″
Florida0322–
Alabama0247–
Massachusetts0274–
New Jersey0291–
Wyoming141501.75″
Oklahoma71701.75″
Kentucky22101.00″
Idaho0220–
Montana71501.25″
California0200–
Mississippi0316–
Arkansas5701.00″
Delaware080–
New Mexico1701.00″
Nevada071–
Connecticut061–
District of Columbia060–
Oregon3101.50″
Louisiana1020.88″
Maine030–
New Hampshire010–
Rhode Island1000.75″
Vermont010–

Every storm day in August 2021

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