How big was the hail on September 4, 2026?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Greensboro, NC. 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 radar, ingested directly from the public NOAA archive. The estimated stone size 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 4, 2026

Hail map — September 4, 2026

Name: US hail map — September 4, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 45 cities across 8 states on September 4, 2026. The largest stones — 2.00″, hen egg size — fell over Greensboro, NC.

Hail swath map for Greensboro, NC on September 4, 2026 showing 2.00 inch hail. — Largest rendered swath of the day: Greensboro, NC — 2.00″ hail. Each city below has its own map for this storm.

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The September 4, 2026 swath — and every other storm since 2023 across your state
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States hit: 8
Cities hit: 45
Largest stone: 2.00″; hen egg size
Impact rating: 7/10; from stone size

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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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States hit on September 4, 2026

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

North Carolina8 cities · 2.00″Wisconsin8 cities · 1.50″Virginia10 cities · 1.50″Ohio12 cities · 1.50″Tennessee2 cities · 1.00″Texas1 city · 1.00″West Virginia2 cities · 1.00″Michigan2 cities · 1.00″

Hardest hit on September 4, 2026

Showing the 24 largest of 45 cities hit. The rest are under their state above.

What people on the ground measured in the US on September 4, 2026

15 reports filed with the National Weather Service — 2 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

1.75″ golf ball size Public
3 NW Parkersburg, IA3:28 PM CDTButler County
Report from mPING: Golf Ball (1.75 in.).
1.50″ half dollar size Trained Spotter
2 ESE Oakpark, VA3:26 PM EDTMadison County
Ping pong ball size hail in the 8000 block of Oak Park Rd
1.50″ half dollar size CoCoRaHS
1 NNW Barboursville, VA4:30 PM EDTOrange County
Ping pong ball size hail reported near Barboursville
1.50″ half dollar size Public
Monona, IA4:23 PM CDTClayton County
Picture of a large hailstone shared via NWSChat.
1.00″ quarter size Trained Spotter
1 W Luray, VA2:05 PM EDTPage County
Quarter size hail observed by trained spotter in Luray.
1.00″ quarter size Broadcast Media
3 ENE Aplington, IA3:23 PM CDTButler County
Picture of quarter sized hail that fell between 320 and 330 pm north of Aplington. Location radar estimated. Relayed by broadcast media.
1.00″ quarter size Public
2 SW Ashland, VA5:21 PM EDTHanover County
Public reported 1 hail.
1.00″ quarter size Public
1 W Giard, IA4:35 PM CDTClayton County
Report of hail near Giard, estimated around quarter sized.
1.00″ quarter size Public
3 S Linwood, NC10:10 PM EDTJohnston County
1.00″ quarter size Public
8 W Wessington Springs, SD12:35 AM CDTJerauld County
Hail on and off for a half hour, but largest was infrequent and up to size of a quarter.
0.75″ penny size Broadcast Media
Edgar, WI5:00 PM CDTMarathon County
Viewer photo of penny sized hail in Edgar. Relayed by WSAW.
0.75″ penny size Public
2 N Greensboro, NC6:14 PM EDTGuilford County
Report from mPING: Dime (0.75 in.).
0.50″ penny size Public
2 NW Lexington, VA5:58 PM EDTRockbridge County
0.50″ penny size Public
4 NW Greensboro, NC6:11 PM EDTGuilford County
Report from mPING: Half-inch (0.50 in.).
0.50″ penny size Public
4 NW Greensboro, NC6:12 PM EDTGuilford County
Report from mPING: Half-inch (0.50 in.).

Showing the 15 largest of 17 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

October 14, 202610 cities · 1.00″October 13, 202610 cities · 1.50″October 10, 20261 city · 1.00″October 8, 20263 cities · 1.50″September 30, 20261 city · 2.00″September 28, 20261 city · 1.00″September 27, 20264 cities · 1.00″September 26, 20261 city · 1.00″September 25, 20263 cities · 1.00″September 23, 20262 cities · 1.00″September 22, 202617 cities · 1.00″September 21, 202665 cities · 2.00″

Every state with hail on record →

FAQ

US hail on September 4, 2026

NOAA radar put hail of an inch or more over 45 cities across 8 states on September 4, 2026. The largest stones — 2.00 inches, hen egg size — were over Greensboro, NC. Every state hit is listed on this page, and every city under it.

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