How big was the hail on September 1, 2026?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Staten Island, NY. 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 1, 2026

Hail map — September 1, 2026

Name: US hail map — September 1, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 19 cities across 3 states on September 1, 2026. The largest stones — 1.00″, quarter size — fell over Staten Island, NY.

Roofing contractors

Every hail storm in your state, on one map

$79/moall of your state, not one storm day

The September 1, 2026 swath — and every other storm since 2023
Street level, filterable by stone size
Door-knocking, pins, jobs and estimates on the same map
An alert the next time your state gets hit

Get the map See a sample map first

HailTrace charges $229 for this one day, once. $79 here is all of your state, every day.

States hit: 3
Cities hit: 19
Largest stone: 1.00″; quarter size
Impact rating: 3/10; 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.

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'll have the date and the stone size in writing — which is the first thing an adjuster asks for.

States hit on September 1, 2026

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

New York7 cities · 1.00″New Jersey11 cities · 1.00″Idaho1 city · 1.00″

Hardest hit on September 1, 2026

What people on the ground measured in the US on September 1, 2026

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.

2.75″ baseball size Trained Spotter
Pickstown, SD5:18 PM CDTCharles Mix County
2.75″ baseball size Emergency Mngr
Niobrara, NE7:44 PM CDTKnox County
Report of baseball size hail resulting in vehicle with broken windshield in Niobrara, relayed by EM via NWSChat. Time estimated from radar.
2.50″ hen egg size Storm Chaser
8 WSW Pickstown, SD4:53 PM CDTGregory County
2.00″ hen egg size Public
8 WSW Springfield, SD7:42 PM CDTBon Homme County
Window broken out. Hail lessening at 745 pm.
1.75″ golf ball size Public
5 S Butte, NE6:16 PM CDTHolt County
Time estimated from radar.
1.75″ golf ball size Trained Spotter
1 WSW Marty, SD6:18 PM CDTCharles Mix County
In addition to golf ball sized hail, winds were gusting at 40-50 mph, and rainfall was heavy.
1.75″ golf ball size Public
Santee, NE7:58 PM CDTKnox County
Public report of various hail sizes with largest around golf ball size. Time estimated via radar.
1.75″ golf ball size Trained Spotter
Ewing, NE8:11 PM CDTHolt County
1.75″ golf ball size Public
Ewing, NE8:16 PM CDTHolt County
1.50″ half dollar size Fire Dept/Rescue
7 N Stuart, NE6:08 PM CDTHolt County
Quarters to ping pong.
1.50″ half dollar size Public
1 WSW Ewing, NE8:15 PM CDTHolt County
1.25″ half dollar size Public
4 E Ravinia, SD5:44 PM CDTCharles Mix County
Ground covered with hail ranging from nickel to half dollar sized.
1.25″ half dollar size Public
5 N Rose, NE5:56 PM CDTRock County
Time estimated from radar.
1.25″ half dollar size Public
Niobrara, NE7:45 PM CDTKnox County
Report of quarters with half dollars at the corner of Walnut Street and Spruce Avenue.
1.00″ quarter size Public
3 ESE Naper, NE4:15 PM CDTBoyd County
Estimated quarter size hail.

Showing the 15 largest of 31 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 31, 20262 cities · 1.00″August 30, 20264 cities · 1.50″August 29, 20263 cities · 1.00″August 28, 20266 cities · 1.50″August 27, 20269 cities · 1.00″August 26, 202625 cities · 1.50″August 25, 20261 city · 1.50″August 24, 20264 cities · 1.00″August 23, 20267 cities · 1.00″August 22, 202621 cities · 1.50″August 21, 202616 cities · 1.50″August 20, 202612 cities · 1.50″

Every state with hail on record →

FAQ

US hail on September 1, 2026

NOAA radar put hail of an inch or more over 19 cities across 3 states on September 1, 2026. The largest stones — 1.00 inches, quarter size — were over Staten Island, NY. Every state hit is listed on this page, and every city under it.

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