National Storms

May 2021 storm reports: hail, wind and tornadoes

IndependentNot affiliated with NOAA or the National Weather Service.

In May 2021, 1,383 hail, 1,959 damaging-wind and 260 tornado reports were logged on 31 storm days across 44 states. The largest hail reported was 5.50″ (softball size) in Bexar County, TX on May 3, 2021. The most hail reports came on May 3, 2021 (223). Radar estimated hail of 1 inch or larger on 31 days; the widest swath, on May 3, 2021, covered 5,821 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

← April 2021 All 2021 storm days June 2021 →

1,383hail reports
1,959wind reports
260tornado reports
5.50″largest hail
31storm days
31days with 1″+ radar hail
May 1: 0May 2: 37May 3: 223May 4: 26May 5: 15May 6: 18May 7: 22May 8: 52May 9: 48May 10: 106May 11: 23May 12: 1May 13: 27May 14: 66May 15: 35May 16: 75May 17: 60May 18: 20May 19: 5May 20: 18May 21: 6May 22: 18May 23: 39May 24: 26May 25: 40May 26: 163May 27: 52May 28: 66May 29: 46May 30: 20May 31: 30May 1May 4May 7May 10May 13May 16May 19May 22May 25May 28May 31max 223
Hail reports by day, May 2021

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

Biggest storm days of May 2021

DayHailWindTornadoLargest hailStatesRadar 1″+ areaRadar max
May 26, 2021163412214.00″215,666 mi²4.11″
May 4, 202126473181.75″17327 mi²1.67″
May 3, 2021223195525.50″165,821 mi²3.90″
May 6, 20211817351.00″1032 mi²1.72″
May 28, 2021667183.00″95,734 mi²3.94″
May 27, 2021528472.75″83,506 mi²4.24″
May 2, 20213762271.75″9477 mi²2.61″
May 9, 2021487432.75″71,808 mi²4.09″
May 10, 20211061524.00″51,859 mi²2.65″
May 17, 20216034194.25″93,837 mi²3.31″

Largest hail reported in May 2021

DaySizeLocation
May 3, 20215.50″ (softball)Bexar County, TX
May 3, 20214.50″ (softball)Bexar County, TX
May 16, 20214.25″ (grapefruit)Scurry County, TX
May 17, 20214.25″ (grapefruit)Howard County, TX
May 10, 20214.00″ (grapefruit)Denton County, TX
May 14, 20214.00″ (grapefruit)Trego County, KS
May 26, 20214.00″ (grapefruit)Ellis County, KS
May 3, 20213.61″ (teacup)Murray County, OK
May 20, 20213.25″ (teacup)Weld County, CO
May 3, 20213.00″ (teacup)Johnson County, TX

Storm reports by state, May 2021

StateHailWindTornadoLargest hail
Texas518245425.50″
Kansas23296184.00″
Alabama421161.25″
Colorado10936263.25″
Virginia715821.50″
Mississippi7120261.75″
Nebraska9233143.00″
Tennessee6103211.00″
Oklahoma7444113.61″
Pennsylvania810821.00″
New Mexico7230123.00″
Arkansas396842.75″
Louisiana1465171.50″
Georgia58371.00″
South Carolina236732.00″
North Carolina354322.00″
Missouri175251.75″
New York16800.75″
South Dakota93961.25″
Illinois2020122.00″
Wisconsin262401.50″
New Jersey0490–
Maryland13731.75″
Wyoming16711.75″
Kentucky71061.25″
Michigan41701.25″
Vermont0190–
New Hampshire0180–
Utah61101.00″
Florida31301.25″
Minnesota7181.25″
Montana9501.75″
Connecticut0120–
West Virginia0111–
Iowa5141.75″
Massachusetts080–
Nevada3501.50″
Maine1601.00″
District of Columbia050–
Idaho050–
North Dakota2211.00″
Indiana1100.88″
Ohio020–
Delaware010–

Every storm day in May 2021

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