How big was the hail on September 21, 2024?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Stockbridge, GA. 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 · September 21, 2024

Hail map — September 21, 2024

Name: US hail map — September 21, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 7 cities across 6 states on September 21, 2024. The largest stones — 2.00″, hen egg size — fell over Stockbridge, GA.

Hail swath map for Stockbridge, GA on September 21, 2024 showing 2.00 inch hail. — Largest rendered swath of the day: Stockbridge, GA — 2.00″ hail. Each city below has its own map for this storm.

States hit: 6
Cities hit: 7
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 September 21, 2024

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

Georgia1 city · 2.00″Missouri1 city · 2.00″Minnesota1 city · 1.00″Pennsylvania2 cities · 1.00″New Mexico1 city · 1.00″Texas1 city · 1.00″

Hardest hit on September 21, 2024

Stockbridge, GA2.00″ · hen egg Nixa, MO2.00″ · hen egg Saint Cloud, MN1.00″ · quarter Harrisburg, PA1.00″ · quarter York, PA1.00″ · quarter Carlsbad, NM1.00″ · quarter Plainview, TX1.00″ · quarter

What people on the ground measured in the US on September 21, 2024

15 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.

2.00″ hen egg size Public
Holmen, WI4:15 PM CDTLa Crosse County
2.00″ hen egg size Storm Chaser
13 SSE Mesa, NM3:32 PM MDTChaves County
Storm chaser on social media reported 2 inch hail while driving along US Hwy 285.
2.00″ hen egg size Law Enforcement
Dimmitt, TX5:25 PM CDTCastro County
2.00″ hen egg size Trained Spotter
4 NE Denton Hill State, PA7:25 PM EDTPotter County
Max size 2 inch measured oblong shaped hail fell for 30 minutes covering the yard with accumulation of 1-2 inches of solid cover hail.
1.75″ golf ball size Law Enforcement
Danube, MN7:35 AM CDTRenville County
Delayed report, time estimated from radar. Dispatch relayed a report of hail up to golf ball in Danube.
1.75″ golf ball size Trained Spotter
2 W West Augusta, VA3:07 PM EDTAugusta County
1.75″ golf ball size Public
4 ENE Cheat Lake, WV3:12 PM EDTMonongalia County
Half dollar to golf ball size hail.
1.75″ golf ball size Trained Spotter
2 E Whalan, MN3:42 PM CDTFillmore County
1.75″ golf ball size Public
Pike, NY5:08 PM EDTWyoming County
Video showing hail about the size of golf balls.
1.75″ golf ball size Public
2 NNE New Glasgow, VA5:35 PM EDTAmherst County
Reported at business on Geddes Mountain Road.
1.75″ golf ball size CO-OP Observer
1 S De Soto, WI5:04 PM CDTCrawford County
1.75″ golf ball size Law Enforcement
3 SSW Retreat, WI5:14 PM CDTCrawford County
1.75″ golf ball size Law Enforcement
2 SW Dimmitt, TX5:25 PM CDTCastro County
1.75″ golf ball size Public
2 S Parkville, PA1:17 AM EDTYork County
Multiple reports of golf ball size hail on the south side of Hanover.
1.50″ half dollar size Emergency Mngr
1 NNE Marshall, MN8:24 AM CDTLyon County
Time estimated from radar.

Showing the 15 largest of 84 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 September 21, 2024

NOAA radar put hail of an inch or more over 7 cities across 6 states on September 21, 2024. The largest stones — 2.00 inches, hen egg size — were over Stockbridge, GA. Every state hit is listed on this page, and every city under it.

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