How big was the hail on August 20, 2026?

The maximum estimated stone size anywhere in the country that day was 1.50 inches, over Colorado Springs, CO. 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 MRMS radar, specifically the Maximum Estimated Size of Hail product, ingested directly from the public NOAA archive. It 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 7 cities across 3 states on August 20, 2026. The largest stones — 1.50″, half dollar size — fell over Colorado Springs, CO.

States hit: 3
Cities hit: 7
Largest stone: 1.50″; half dollar size
Impact rating: 5/10; from stone size

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

Roofing contractors

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Three years of hail swaths, filterable by stone size
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Homeowners

Did hail hit your address?

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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Free, and no account needed to look it up. If hail did hit, you can ask for a free inspection from a vetted local roofer.

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.

Colorado2 cities · 1.50″Florida4 cities · 1.00″Arizona1 city · 1.00″

Hardest hit on August 20, 2026

Colorado Springs, CO1.50″ · half dollar Pueblo West, CO1.50″ · half dollar Daytona Beach, FL1.00″ · quarter Flagstaff, AZ1.00″ · quarter Ormond Beach, FL1.00″ · quarter The Acreage, FL1.00″ · quarter Rockledge, FL1.00″ · quarter

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

14 reports filed with the National Weather Service — 4 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

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.
1.25″ half dollar size Public
2 E Boy River, MN5:12 PM CDTCass County
Social media report with photo. Estimated based on radar.
1.00″ quarter size Public
5 NW Staples Airport, MN11:15 AM CDTWadena County
1.00″ quarter size NWS Employee
Bellemont (NWS Flagstaf, AZ1:05 PM MSTCoconino County
Strong thunderstorm bringing many 0.5-0.8 inch hailstones. Largest hailstone was 1 inch diameter.
1.00″ quarter size Public
13 SSW Wood Lake, NE3:56 PM CDTCherry County
Dimes to quarters.
1.00″ quarter size Public
4 SW Ecru, MS4:08 PM CDTPontotoc County
1.00″ quarter size Trained Spotter
2 SE Buffalo Lake, TX4:50 PM CDTRandall County
Report of quarter sized hail 6 miles S of Umbarger.
1.00″ quarter size Trained Spotter
1 SSW Brevik, MN6:01 PM CDTCass County
1.00″ quarter size Public
Fifty Lakes, MN7:07 PM CDTCrow Wing County
0.88″ penny size Public
8 WSW Johnstown, NE3:39 PM CDTCherry County
0.70″ penny size Public
Winona, KS1:25 AM CDTLogan County
Public report (with picture) of pea to dime size hail in Winona shortly before 12:30 am MDT, 1:30 am CDT.
0.50″ penny size Public
Chisholm, MN6:07 PM CDTSt. Louis County
Multiple mPing reports of Pea to Half inch size hail in the city of Chisholm.

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

August 19, 202620 cities · 2.00″August 18, 20266 cities · 1.50″August 17, 20266 cities · 1.00″August 16, 202610 cities · 1.50″August 15, 20268 cities · 1.50″August 14, 202611 cities · 2.00″August 13, 202616 cities · 2.00″August 12, 202610 cities · 1.50″August 11, 202633 cities · 2.00″August 10, 202623 cities · 1.50″August 9, 202649 cities · 1.50″August 8, 20265 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 7 cities across 3 states on August 20, 2026. The largest stones — 1.50 inches, half dollar size — were over Colorado Springs, CO. Every state hit is listed on this page, and every city under it.

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