How big was the hail on September 23, 2023?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Liberty, MO. 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 23, 2023

Hail map — September 23, 2023

Name: US hail map — September 23, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 22 cities across 4 states on September 23, 2023. The largest stones — 2.00″, hen egg size — fell over Liberty, MO.

Hail swath map for Liberty, MO on September 23, 2023 showing 2.00 inch hail. — Largest rendered swath of the day: Liberty, MO — 2.00″ hail. Each city below has its own map for this storm.

States hit: 4
Cities hit: 22
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 23, 2023

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

Missouri11 cities · 2.00″Kansas8 cities · 1.00″Nebraska2 cities · 1.00″Oklahoma1 city · 1.00″

What people on the ground measured in the US on September 23, 2023

15 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.

4.00″ softball size Trained Spotter
1 W Raiford, OK4:45 PM CDTMcIntosh County
3.85 inch hail reported via social media.
3.25″ baseball size Broadcast Media
2 W Sasakwa, OK7:55 PM CDTSeminole County
.
3.00″ baseball size Trained Spotter
1 WSW Henryetta, OK3:50 PM CDTOkmulgee County
Hail measure 2.5 to 3.0 inches. Report via social media. time estimated by radar.
3.00″ baseball size Broadcast Media
4 S Bowlegs, OK7:15 PM CDTSeminole County
3.00″ baseball size Emergency Mngr
Allen, OK8:20 PM CDTPontotoc County
Hail report from Allen FD.
2.75″ baseball size Emergency Mngr
Vivian, OK4:47 PM CDTMcIntosh County
Baseball size hail and larger reported in the mill creek area.
2.75″ baseball size Broadcast Media
Holdenville, OK11:52 PM CDTHughes County
2.50″ hen egg size Public
2 W Lenexa, KS10:55 AM CDTJohnson County
2.50″ hen egg size Public
Liberty, MO12:35 PM CDTClay County
2.50″ hen egg size Storm Chaser
Sasakwa, OK8:30 PM CDTSeminole County
Pictures on Twitter.
2.25″ hen egg size Public
2 S Beggs, OK7:08 PM CDTOkmulgee County
Report from mPING: Hen Egg+ (2.25 in.).
2.00″ hen egg size Trained Spotter
Wellsville, KS8:40 AM CDTFranklin County
2.00″ hen egg size Public
Columbus, NE9:25 AM CDTPlatte County
Picture on X shows hail up to 2 inches in diameter from Columbus.
2.00″ hen egg size Public
3 ESE Clare, KS4:12 PM CDTJohnson County
Received from social media with 2 inch hail.
2.00″ hen egg size Public
Peculiar, MO4:35 PM CDTCass County
report via social media.

Showing the 15 largest of 111 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 23, 2023

NOAA radar put hail of an inch or more over 22 cities across 4 states on September 23, 2023. The largest stones — 2.00 inches, hen egg size — were over Liberty, MO. Every state hit is listed on this page, and every city under it.

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