How big was the hail on July 27, 2025?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Dickinson, ND. 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 · July 27, 2025

Hail map — July 27, 2025

Name: US hail map — July 27, 2025
Creator: HailMate

NOAA radar detected hail of an inch or more over 26 cities across 3 states on July 27, 2025. The largest stones — 2.00″, hen egg size — fell over Dickinson, ND.

Hail swath map for Dickinson, ND on July 27, 2025 showing 2.00 inch hail. — Largest rendered swath of the day: Dickinson, ND — 2.00″ hail. Each city below has its own map for this storm.

States hit: 3
Cities hit: 26
Largest stone: 2.00″; hen egg size
Impact rating: 7/10; 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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HailMate's canvassing map: hail swaths colour-banded by stone size, from yellow through red to purple, laid over a satellite view of a Texas territory, with hail swath and territory controls.

Your whole state at street level, with this storm already on it
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 July 27, 2025

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

South Dakota2 cities · 2.00″North Dakota1 city · 2.00″Minnesota23 cities · 1.50″

Hardest hit on July 27, 2025

Showing the 24 largest of 26 cities hit. The rest are under their state above.

What people on the ground measured in the US on July 27, 2025

15 reports filed with the National Weather Service — 10 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.

2.75″ baseball size Trained Spotter
Watertown Airport, SD6:40 PM CDTCodington County
1.75″ golf ball size Public
10 N Dickinson, ND3:09 AM CDTDunn County
Facebook post.
1.75″ golf ball size Trained Spotter
4 NW Rauville, SD6:26 PM CDTCodington County
1.75″ golf ball size Trained Spotter
4 NE Hazel, SD7:40 PM CDTHamlin County
Radar estimated time.
1.75″ golf ball size Trained Spotter
Plymouth, MN7:51 PM CDTHennepin County
1.75″ golf ball size Trained Spotter
3 NW Castlewood, SD8:00 PM CDTHamlin County
1.75″ golf ball size Trained Spotter
2 ESE Falcon Heights, MN8:03 PM CDTRamsey County
1.50″ half dollar size Trained Spotter
Herman, MN4:12 PM CDTGrant County
1.50″ half dollar size Public
Johnson, MN5:45 PM CDTBig Stone County
1.50″ half dollar size Public
1 SW Watertown, SD6:54 PM CDTCodington County
1.25″ half dollar size Trained Spotter
Morris, MN4:57 PM CDTStevens County
1.25″ half dollar size Public
1 N Litchfield, MN7:29 PM CDTMeeker County
1.25″ half dollar size Public
2 NE Plymouth, MN7:47 PM CDTHennepin County
Report from mPING: Half Dollar (1.25 in.).
1.00″ quarter size Trained Spotter
Aitkin, MN7:53 AM CDTAitkin County
Hail currently falling with not much wind.
1.00″ quarter size Trained Spotter
1 ESE Aitkin, MN7:55 AM CDTAitkin County

Showing the 15 largest of 57 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

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 July 27, 2025

NOAA radar put hail of an inch or more over 26 cities across 3 states on July 27, 2025. The largest stones — 2.00 inches, hen egg size — were over Dickinson, ND. Every state hit is listed on this page, and every city under it.

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