How big was the hail on May 15, 2025?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Near North Side, IL. 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 · May 15, 2025

Hail map — May 15, 2025

Name: US hail map — May 15, 2025
Creator: HailMate

NOAA radar detected hail of an inch or more over 64 cities across 7 states on May 15, 2025. The largest stones — 2.00″, hen egg size — fell over Near North Side, IL.

Hail swath map for Near North Side, IL on May 15, 2025 showing 2.00 inch hail. — Largest rendered swath of the day: Near North Side, IL — 2.00″ hail. Each city below has its own map for this storm.

States hit: 7
Cities hit: 64
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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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 May 15, 2025

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

Illinois46 cities · 2.00″Wisconsin13 cities · 1.50″Texas1 city · 1.00″Virginia1 city · 1.00″Michigan1 city · 1.00″North Carolina1 city · 1.00″Minnesota1 city · 1.00″

Hardest hit on May 15, 2025

Showing the 24 largest of 64 cities hit. The rest are under their state above.

What people on the ground measured in the US on May 15, 2025

15 reports filed with the National Weather Service — 2 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.

4.00″ softball size Public
2 W Altoona, WI4:15 PM CDTEau Claire County
Relayed with photo by WQOW.
3.75″ baseball size Public
2 WSW Altoona, WI4:18 PM CDTEau Claire County
Email with picture.
3.50″ baseball size Public
Altoona, WI4:15 PM CDTEau Claire County
Relayed with photo from WQOW.
3.00″ baseball size Broadcast Media
2 WSW Altoona, WI4:19 PM CDTEau Claire County
3 inch diameter hail measured at the WEAU studios.
3.00″ baseball size Public
3 N Saunemin, IL7:41 PM CDTLivingston County
Photo shows 3 inch diameter hail near IL-47 and E 2100 N Road north of Saunemin. Time estimated by radar. Report relayed by broadcast media.
2.75″ baseball size Broadcast Media
3 SSW Altoona, WI4:18 PM CDTEau Claire County
Corrects previous hail report from 3 SSW Altoona. Corrects previous hail report from 3 SSW Altoona. measured at the WQOW studios.
2.75″ baseball size Public
Altoona, WI4:18 PM CDTEau Claire County
Report from mPING: Baseball (2.75 in.).
2.75″ baseball size Public
1 SE Emington, IL7:44 PM CDTLivingston County
Photo shared to social media shows baseball size hail near Emington. Time estimated by radar.
2.50″ hen egg size Trained Spotter
1 W Altoona, WI4:15 PM CDTEau Claire County
2.50″ hen egg size Public
1 W Altoona, WI4:16 PM CDTEau Claire County
Damage to siding reported as well.
2.50″ hen egg size Broadcast Media
Stokes, NC6:25 PM EDTPitt County
Pictures of tennis ball size hail near Stokes was sent by a viewer to WRAL.
2.50″ hen egg size Trained Spotter
4 W Waterford, WI6:13 PM CDTRacine County
Tennis-Baseball sized hail causing significant damage to vehicles in far western Waterford near Walworth county border.
2.50″ hen egg size Public
1 SE Ixonia, WI6:14 PM CDTJefferson County
Report from mPING: Tennis Ball (2.50 in.).
2.50″ hen egg size Public
1 W Normal, IL7:05 PM CDTMcLean County
Delayed report on social media with the time estimated by radar. A photo was provided.
2.50″ hen egg size Public
Saunemin, IL7:39 PM CDTLivingston County
Photo shared via social media shows tennis ball size hail near Saunemin. Time estimated by radar.

Showing the 15 largest of 297 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 May 15, 2025

NOAA radar put hail of an inch or more over 64 cities across 7 states on May 15, 2025. The largest stones — 2.00 inches, hen egg size — were over Near North Side, IL. Every state hit is listed on this page, and every city under it.

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