How big was the hail on August 12, 2023?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Lawton, OK. 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 · August 12, 2023

Hail map — August 12, 2023

Name: US hail map — August 12, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 20 cities across 9 states on August 12, 2023. The largest stones — 2.00″, hen egg size — fell over Lawton, OK.

Hail swath map for Lawton, OK on August 12, 2023 showing 2.00 inch hail. — Largest rendered swath of the day: Lawton, OK — 2.00″ hail. Each city below has its own map for this storm.

States hit: 9
Cities hit: 20
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 August 12, 2023

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

Oklahoma1 city · 2.00″Ohio5 cities · 1.50″Kentucky4 cities · 1.00″Missouri3 cities · 1.00″Florida1 city · 1.00″Indiana1 city · 1.00″New York1 city · 1.00″Illinois2 cities · 1.00″Pennsylvania2 cities · 1.00″

What people on the ground measured in the US on August 12, 2023

15 reports filed with the National Weather Service. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

3.00″ baseball size 911 Call Center
2 ESE Claysville, PA8:14 PM EDTWashington County
Hailstone fell on Hawthorn Road.
2.50″ hen egg size Public
1 N Claysville, PA8:08 PM EDTWashington County
Photo provided
2.00″ hen egg size Public
Sheridan Lake, SD4:00 PM CDTPennington County
2.00″ hen egg size Public
Hermosa, SD5:05 PM CDTCuster County
2.00″ hen egg size Public
1 SSE Taylorstown, PA8:08 PM EDTWashington County
2.00″ hen egg size 911 Call Center
2 ESE Claysville, PA8:12 PM EDTWashington County
Multiple photos of measured 2 inch hail in the Claysville area
2.00″ hen egg size Storm Chaser
8 WNW Rockyford, SD8:10 PM CDTOglala Lakota County
2.00″ hen egg size Storm Chaser
4 WNW Rockyford, SD8:18 PM CDTOglala Lakota County
1.75″ golf ball size Public
2 WSW Sandusky South, OH1:35 PM EDTErie County
Spotter reported golf ball sized hail and 80 mph winds near the intersection of Route 2 and Route 4. He also reported windows blown out and TV antenna blown down at his home.
1.75″ golf ball size Public
4 ESE Castalia, OH1:35 PM EDTErie County
Golf ball size hail reported by trained weather spotter.
1.75″ golf ball size Public
7 SE Ravenna, OH4:18 PM EDTPortage County
Delayed report- Edinburg Township. Picture received via social media.
1.75″ golf ball size Public
2 SSE Craig Beach, OH4:25 PM EDTMahoning County
video on social media of ping pong to golf ball size hail near Lake Milton.
1.75″ golf ball size Public
Lake Milton, OH4:34 PM EDTMahoning County
Delayed report- Golf ball sized hail in Lake Milton. Time estimated via radar.
1.75″ golf ball size Public
2 ESE Mills River, NC4:50 PM EDTHenderson County
1.75″ golf ball size 911 Call Center
Sherrodsville, OH4:58 PM EDTCarroll County

Showing the 15 largest of 85 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 August 12, 2023

NOAA radar put hail of an inch or more over 20 cities across 9 states on August 12, 2023. The largest stones — 2.00 inches, hen egg size — were over Lawton, OK. Every state hit is listed on this page, and every city under it.

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