How big was the hail on August 26, 2024?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Sioux Falls, SD. 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 26, 2024

Hail map — August 26, 2024

Name: US hail map — August 26, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 20 cities across 6 states on August 26, 2024. The largest stones — 2.00″, hen egg size — fell over Sioux Falls, SD.

Hail swath map for Sioux Falls, SD on August 26, 2024 showing 2.00 inch hail. — Largest rendered swath of the day: Sioux Falls, SD — 2.00″ hail. Each city below has its own map for this storm.

States hit: 6
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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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 26, 2024

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

South Dakota1 city · 2.00″Connecticut5 cities · 2.00″Rhode Island5 cities · 1.50″Massachusetts1 city · 1.50″Minnesota7 cities · 1.00″New Hampshire1 city · 1.00″

What people on the ground measured in the US on August 26, 2024

15 reports filed with the National Weather Service — 1 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 Storm Chaser
6 NNE Inman, NE5:50 PM CDTHolt County
Report from a storm chaser of 4 inch hail that damaged the windshield. Estimated time via radar.
3.25″ baseball size Broadcast Media
5 SE Osmond, NE6:17 PM CDTPierce County
2.75″ baseball size Storm Chaser
4 SSW Emmet, NE5:20 PM CDTHolt County
2.75″ baseball size Public
3 NW Inman, NE5:48 PM CDTHolt County
Baseball size hail.
2.50″ hen egg size Public
5 SW Emmet, NE5:22 PM CDTHolt County
Tennis ball size hail.
2.50″ hen egg size Law Enforcement
Oneill, NE5:35 PM CDTHolt County
2.25″ hen egg size Public
7 SW Emmet, NE5:16 PM CDTHolt County
Hen egg size hail.
2.00″ hen egg size Public
W. Granville, MA1:40 PM EDTHampden County
Time estimated via radar.
2.00″ hen egg size Public
Hermosa, SD4:50 PM CDTCuster County
2.00″ hen egg size Public
11 SSE Atkinson, NE5:11 PM CDTHolt County
1.75″ golf ball size Public
6 WNW Urbank, MN2:00 PM CDTOtter Tail County
Minor siding and car damage. Time estimated from radar.
1.75″ golf ball size Broadcast Media
Parkers Prairie, MN2:15 PM CDTOtter Tail County
Report relayed via media.
1.75″ golf ball size Trained Spotter
14 SSE Bassett, NE4:18 PM CDTRock County
1.75″ golf ball size Public
Hermosa, SD4:50 PM CDTCuster County
1.75″ golf ball size Public
7 S Atkinson, NE5:09 PM CDTHolt County

Showing the 15 largest of 79 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 26, 2024

NOAA radar put hail of an inch or more over 20 cities across 6 states on August 26, 2024. The largest stones — 2.00 inches, hen egg size — were over Sioux Falls, SD. Every state hit is listed on this page, and every city under it.

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