How big was the hail on August 23, 2023?

The maximum estimated stone size anywhere in the country that day was 1.50 inches, over Lorain, OH. 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 23, 2023

Hail map — August 23, 2023

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

NOAA radar detected hail of an inch or more over 19 cities across 4 states on August 23, 2023. The largest stones — 1.50″, half dollar size — fell over Lorain, OH.

Hail swath map for Lorain, OH on August 23, 2023 showing 1.50 inch hail. — Largest rendered swath of the day: Lorain, OH — 1.50″ hail. Each city below has its own map for this storm.

States hit: 4
Cities hit: 19
Largest stone: 1.50″; half dollar size
Impact rating: 5/10; 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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Homeowners

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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 23, 2023

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

Ohio7 cities · 1.50″Michigan10 cities · 1.00″South Dakota1 city · 1.00″North Dakota1 city · 1.00″

Hardest hit on August 23, 2023

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

13 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
1 NW Au Gres, MI7:08 AM EDTArenac County
Corrects previous hail report from 1 NW Au Gres. New report on social media showing 2 inch hail stones.
1.75″ golf ball size Amateur Radio
2 NW Elyria, OH8:54 PM EDTLorain County
Two minutes of hail ranging from quarter to golf ball sized in Elyria Twp.
1.75″ golf ball size Public
1 NE Wellington, OH9:41 PM EDTLorain County
Golf ball size hail reported in Wellington, OH.
1.50″ half dollar size Public
3 ENE Lapeer, MI9:28 AM EDTLapeer County
Picture sent on social media of hail near ping-pong ball and quarter size.
1.25″ half dollar size Public
2 S Ashland, OH10:53 PM EDTAshland County
1.00″ quarter size Public
2 WSW Sheffield Lake, OH8:46 PM EDTLorain County
Multiple reports received on social media of at least quarter size hail between Lorain and Sheffield Lake.
1.00″ quarter size Public
1 NNE Lorain, OH8:48 PM EDTLorain County
picture from social media of quarter size hail.
1.00″ quarter size Trained Spotter
1 NE Lorain, OH9:00 PM EDTLorain County
1.00″ quarter size Trained Spotter
3 SSW Sawyer, ND8:31 PM CDTWard County
heavy rain with wind gusts 40 to 45.
0.88″ penny size Public
Au Gres, MI7:08 AM EDTArenac County
0.70″ penny size Trained Spotter
3 S Logan, ND8:18 PM CDTWard County
Heavy Rain along with 50 mph winds.
0.25″ penny size Trained Spotter
1 NNW Hubbard, OH6:08 PM EDTTrumbull County
0.25″ penny size Public
Lynn Haven, FL8:00 PM EDTBay County
The public reported very small hail fell in Lynn Haven.

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 23, 2023

NOAA radar put hail of an inch or more over 19 cities across 4 states on August 23, 2023. The largest stones — 1.50 inches, half dollar size — were over Lorain, OH. Every state hit is listed on this page, and every city under it.

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