How big was the hail on August 11, 2023?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Minneapolis, MN. 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 11, 2023

Hail map — August 11, 2023

Name: US hail map — August 11, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 34 cities across 4 states on August 11, 2023. The largest stones — 2.00″, hen egg size — fell over Minneapolis, MN.

Hail swath map for Minneapolis, MN on August 11, 2023 showing 2.00 inch hail. — Largest rendered swath of the day: Minneapolis, MN — 2.00″ hail. Each city below has its own map for this storm.

States hit: 4
Cities hit: 34
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 11, 2023

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

Minnesota29 cities · 2.00″Alabama3 cities · 1.50″Iowa1 city · 1.00″Oklahoma1 city · 1.00″

Hardest hit on August 11, 2023

Showing the 24 largest of 34 cities hit. The rest are under their state above.

What people on the ground measured in the US on August 11, 2023

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.

3.00″ baseball size Public
Rockford, MN4:46 PM CDTWright County
Picture via facebook comments.
3.00″ baseball size Trained Spotter
6 S Dassel, MN4:48 PM CDTMeeker County
Hail measured 3.75 inches in diameter near Hwy 15. Submitted photo of hail with ruler via email. Damage to siding on west side of house.
3.00″ baseball size Public
6 S Dassel, MN4:50 PM CDTMeeker County
Picture with ruler via facebook messenger. Slightly larger than 3 inches.
3.00″ baseball size Public
2 WSW Minneapolis, MN5:23 PM CDTHennepin County
Mostly golf ball size, with a few 2.5 to 3 inch stones in Bryn Mawr.
3.00″ baseball size Trained Spotter
2 WNW Meservey, IA9:14 PM CDTHancock County
2.75″ baseball size Public
5 NE Buffalo Lake, MN4:28 PM CDTRenville County
Estimated up to baseball sized hail north of Buffalo Lake near Lake Allie. Time estimated by radar and sized estimated via pictures on twitter.
2.75″ baseball size Public
6 NNE Buffalo Lake, MN4:33 PM CDTRenville County
Delayed report of baseball size hail at the Oakdale Golf Course. Cars dented and windows shattered.
2.50″ hen egg size Amateur Radio
2 WNW Minneapolis, MN5:24 PM CDTHennepin County
2.50″ hen egg size Public
2 SSW Minneapolis, MN5:50 PM CDTHennepin County
Picture next to baseball, slightly smaller, via twitter.
2.50″ hen egg size Broadcast Media
Pepin, WI6:40 PM CDTPepin County
Picture via Broadcast Media on Twitter. Size estimated based on picture between 2 and 2.5 inches.
2.50″ hen egg size Public
Middle Inlet, WI6:54 PM CDTMarinette County
Report forwarded by WBAY-TV. Time estimated from radar.
2.25″ hen egg size Public
Paden, OK2:08 AM CDTOkfuskee County
2.00″ hen egg size Emergency Mngr
Paden, OK2:02 AM CDTOkfuskee County
Public report relayed via Emergency Management. Time is radar estimated.
2.00″ hen egg size Trained Spotter
1 S Burchard, NE1:50 PM CDTPawnee County
2.00″ hen egg size Amateur Radio
Pierz, MN2:46 PM CDTMorrison County
2 to 2.25 inch hail in Pierz relayed via HAM in NWSChat.

Showing the 15 largest of 172 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 11, 2023

NOAA radar put hail of an inch or more over 34 cities across 4 states on August 11, 2023. The largest stones — 2.00 inches, hen egg size — were over Minneapolis, MN. Every state hit is listed on this page, and every city under it.

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