How big was the hail on August 20, 2026?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Malvern, AR. Sizes vary street to street inside a single swath, so a city's figure is the largest radar estimated anywhere within about 5 miles of it.

Where does this hail data come from?

NOAA radar, ingested directly from the public NOAA archive. The estimated stone size runs about a quarter of an inch against ground truth, which makes it good for deciding where to look and not a substitute for an inspection.

Does this mean roofs were damaged?

Radar measures stone size, not damage. Whether a particular roof was damaged depends on stone size, wind direction, roof age and material — only an inspection settles it. These figures tell you where it is worth looking.

How do I see the actual swath on a map?

A HailMate plan puts a whole state on a real interactive map, with this swath and three years of others already on it. From $79/mo, and the canvassing tools come with it.

United States · August 20, 2026

Hail map — August 20, 2026

Name: US hail map — August 20, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 49 cities across 9 states on August 20, 2026. The largest stones — 2.00″, hen egg size — fell over Malvern, AR.

Hail swath map for Malvern, AR on August 20, 2026 showing 2.00 inch hail. — Largest rendered swath of the day: Malvern, AR — 2.00″ hail. Each city below has its own map for this storm.

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The August 20, 2026 swath — and every other storm since 2023 across your state
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States hit: 9
Cities hit: 49
Largest stone: 2.00″; hen egg size
Impact rating: 7/10; from stone size

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

Homeowners

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This page covers your area as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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States hit on August 20, 2026

Every state where NOAA radar put an inch or more of hail over a city that day, biggest stone first.

Arkansas1 city · 2.00″Florida22 cities · 1.50″Colorado5 cities · 1.50″Alabama8 cities · 1.50″Tennessee5 cities · 1.50″Arizona2 cities · 1.50″Georgia2 cities · 1.50″Minnesota2 cities · 1.00″Mississippi2 cities · 1.00″

Hardest hit on August 20, 2026

Showing the 24 largest of 49 cities hit. The rest are under their state above.

What people on the ground measured in the US on August 20, 2026

15 reports filed with the National Weather Service — 3 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

2.00″ hen egg size Public
2 NNE Cuyuna, MN8:03 PM CDTCrow Wing County
Public report with photo of hail. Person reported largest stone measured 2 inches in diameter.
2.00″ hen egg size Public
Mccook, NE10:06 PM CDTRed Willow County
ping pong to 2 inch hail stones. Stone compared to a quarter.
1.75″ golf ball size Public
2 NNW Ludell, KS1:45 AM CDTRawlins County
At least golf ball if not larger hail for about 10-20 minutes. Noted ground was covered white. Received 1.25 inches of rain as well.
1.75″ golf ball size Public
Humboldt, SD6:48 PM CDTMinnehaha County
1.75″ golf ball size Trained Spotter
6 WSW Callaway, NE7:24 PM CDTCuster County
Ping pong to golf ball. Wind gusts 50 - 60 mph.
1.75″ golf ball size Trained Spotter
1 ESE Wabasso, MN7:50 PM CDTRedwood County
1.5 to 1.75 inch hail measured.
1.75″ golf ball size Public
5 SE Paynesville, MN8:03 PM CDTMeeker County
Photo of measured hail on social media. Time estimated based on radar.
1.75″ golf ball size Public
1 WSW Mccook, NE10:15 PM CDTRed Willow County
estimated ping pong to golf ball hail.
1.75″ golf ball size Public
5 N Oberlin, KS10:50 PM CDTDecatur County
estimated ping pong to golf ball hail.
1.75″ golf ball size Trained Spotter
11 S Herndon, KS11:00 PM CDTRawlins County
Spotter report of pea-nickel hail with some golf ball sized mixed in.
1.50″ half dollar size Public
4 ESE Hurricane, MS4:48 PM CDTPontotoc County
1.50″ half dollar size Public
2 E Fifty Lakes, MN6:59 PM CDTCrow Wing County
1.50″ half dollar size Public
5 NW Crooks, SD7:02 PM CDTMinnehaha County
Photo posted to social media. Time estimated based on radar.
1.50″ half dollar size Public
1 SW Tryon, NC10:36 PM EDTPolk County
Minor hail damage reported on roof of house and car. Time estimated from radar.
1.50″ half dollar size Public
Mccook, NE10:00 PM CDTRed Willow County
estimated half dollar to ping pong ball hail. time estimated to when core perked up over town.

Showing the 15 largest of 61 hail reports filed that day.

Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.

Other hail days

September 30, 20261 city · 2.00″September 28, 20261 city · 1.00″September 27, 20264 cities · 1.00″September 26, 20261 city · 1.00″September 25, 20263 cities · 1.00″September 23, 20262 cities · 1.00″September 22, 202617 cities · 1.00″September 21, 202665 cities · 2.00″September 20, 20268 cities · 1.50″September 19, 202637 cities · 1.50″September 18, 202623 cities · 2.00″September 17, 202619 cities · 1.50″

Every state with hail on record →

FAQ

US hail on August 20, 2026

NOAA radar put hail of an inch or more over 49 cities across 9 states on August 20, 2026. The largest stones — 2.00 inches, hen egg size — were over Malvern, AR. Every state hit is listed on this page, and every city under it.

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