How big was the hail on July 15, 2024?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Ames, IA. 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 15, 2024

Hail map — July 15, 2024

Name: US hail map — July 15, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 25 cities across 8 states on July 15, 2024. The largest stones — 2.00″, hen egg size — fell over Ames, IA.

Hail swath map for Ames, IA on July 15, 2024 showing 2.00 inch hail. — Largest rendered swath of the day: Ames, IA — 2.00″ hail. Each city below has its own map for this storm.

States hit: 8
Cities hit: 25
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.

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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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States hit on July 15, 2024

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

Iowa6 cities · 2.00″Illinois7 cities · 1.50″Arizona1 city · 1.50″Louisiana1 city · 1.00″Georgia2 cities · 1.00″South Carolina2 cities · 1.00″Massachusetts1 city · 1.00″Ohio5 cities · 1.00″

Hardest hit on July 15, 2024

Showing the 24 largest of 25 cities hit. The rest are under their state above.

What people on the ground measured in the US on July 15, 2024

15 reports filed with the National Weather Service — 1 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.

3.50″ baseball size Public
5 SSE Cleveland, ND3:00 AM CDTStutsman County
Windows throughout two houses were taken out, with siding destroyed. Vehicles dented. Crops in the area were destroyed. Time estimated by radar.
3.00″ baseball size Public
4 E Victor, NY4:48 PM EDTOntario County
2.50″ hen egg size Public
Vail, IA3:42 PM CDTCrawford County
Forward from broadcast media. Time estimated by radar.
2.50″ hen egg size Public
4 E Victor, NY4:48 PM EDTOntario County
2.00″ hen egg size Public
5 N Traer, IA3:36 PM CDTTama County
Relayed through broadcast media. Time estimated by radar.
2.00″ hen egg size Trained Spotter
Westside, IA3:48 PM CDTCrawford County
Spotter reported 2 inch hail in Westside. Delayed report.
1.75″ golf ball size Fire Dept/Rescue
Prinsburg, MN7:37 AM CDTKandiyohi County
1.75″ golf ball size Public
Canandaigua, NY4:45 PM EDTOntario County
1.75″ golf ball size Public
1 ENE Custer, SD9:18 PM CDTCuster County
mPING report
1.50″ half dollar size Public
Medina, ND2:40 AM CDTStutsman County
Report relayed via broadcast media with radar estimated time.
1.50″ half dollar size Public
Xenia, OH3:51 PM EDTGreene County
via broadcast media.
1.50″ half dollar size Public
2 SE Belleville, WI6:59 PM CDTGreen County
1.50″ half dollar size Public
Custer, SD9:15 PM CDTCuster County
1.25″ half dollar size Public
1 W Granite Falls, MN4:30 AM CDTYellow Medicine County
Report from mPING: Half Dollar (1.25 in.).
1.25″ half dollar size Public
Redwood Falls, MN5:08 AM CDTRedwood County
Report from mPING: Half Dollar (1.25 in.).

Showing the 15 largest of 89 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 15, 2024

NOAA radar put hail of an inch or more over 25 cities across 8 states on July 15, 2024. The largest stones — 2.00 inches, hen egg size — were over Ames, IA. Every state hit is listed on this page, and every city under it.

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