How big was the hail on July 25, 2025?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Waterbury, CT. 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 25, 2025

Hail map — July 25, 2025

Name: US hail map — July 25, 2025
Creator: HailMate

NOAA radar detected hail of an inch or more over 2 cities across 2 states on July 25, 2025. The largest stones — 1.00″, quarter size — fell over Waterbury, CT.

Hail swath map for Waterbury, CT on July 25, 2025 showing 1.00 inch hail. — Largest rendered swath of the day: Waterbury, CT — 1.00″ hail. Each city below has its own map for this storm.

States hit: 2
Cities hit: 2
Largest stone: 1.00″; quarter size
Impact rating: 3/10; 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 July 25, 2025

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

Connecticut1 city · 1.00″North Dakota1 city · 1.00″

Hardest hit on July 25, 2025

Waterbury, CT1.00″ · quarter Williston, ND1.00″ · quarter

What people on the ground measured in the US on July 25, 2025

13 reports filed with the National Weather Service — 5 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
11 SW Mildred, MT5:36 PM MDTPrairie County
Rainfall 0.10 or less (estimated).
1.50″ half dollar size Trained Spotter
2 NW Williston, ND6:44 PM CDTWilliams County
Quarter to ping pong ball size hail.
1.25″ half dollar size Trained Spotter
7 NE Plevna, MT6:58 PM MDTFallon County
1.00″ quarter size Public
5 S Terry, MT5:10 PM MDTPrairie County
5 miles S of Terry. Hail started at 5:10, storm pretty well passed by 5:30. 0.17 of rain, smaller hail. Still lightly raining.
1.00″ quarter size Trained Spotter
2 NNW Ismay, MT6:03 PM MDTCuster County
1.00″ quarter size Trained Spotter
Williston, ND7:11 PM CDTWilliams County
1.00″ quarter size Trained Spotter
7 NE Plevna, MT6:30 PM MDTFallon County
1.00″ quarter size Public
8 S Ross, ND8:15 PM CDTMountrail County
Time estimated from radar.
0.88″ penny size Public
Bainville, MT5:00 PM MDTRoosevelt County
Nickel sized hail (from photo) several pieces in her hand.
0.75″ penny size Public
2 NW Williston, ND6:41 PM CDTWilliams County
Report from mPING: Dime (0.75 in.).
0.75″ penny size Public
3 W Williston, ND7:00 PM CDTWilliams County
Report from mPING: Dime (0.75 in.).
0.25″ penny size Public
1 S Northstar Ski Base, CA4:45 PM PDTPlacer County
Delayed report. Video confirmed accumulating pea size hail with a depth up to several inches.
0.25″ penny size Public
1 N Carnelian Bay, CA5:15 PM PDTPlacer County
Delayed report. Trained spotter reported pea size hail.

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 25, 2025

NOAA radar put hail of an inch or more over 2 cities across 2 states on July 25, 2025. The largest stones — 1.00 inches, quarter size — were over Waterbury, CT. Every state hit is listed on this page, and every city under it.

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