How big was the hail on May 20, 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 · May 20, 2026

Hail map — May 20, 2026

Name: US hail map — May 20, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 15 cities across 1 state on May 20, 2026. The largest stones — 1.00″, quarter size — fell over Staten Island, NY.

Hail swath map for Staten Island, NY on May 20, 2026 showing 1.00 inch hail. — Largest rendered swath of the day: Staten Island, NY — 1.00″ hail. Each city below has its own map for this storm.

States hit: 1
Cities hit: 15
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.

Roofing contractors

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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 May 20, 2026

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

New York15 cities · 1.00″

Hardest hit on May 20, 2026

What people on the ground measured in the US on May 20, 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.

1.75″ golf ball size Public
Clendenin, WV5:06 PM EDTKanawha County
Verified through social media picture.
1.75″ golf ball size Other Federal
5 NE Marathon, TX5:58 PM CDTBrewster County
Report from the IBHS Hail Field Research team measured hailstones up to 1.89 inches.
1.50″ half dollar size Public
3 NNW Alpine, TX3:20 PM CDTBrewster County
A member of the public sent a picture of a large hailstone (approximately ping-pong ball size) near Alpine. The time of occurrence and exact location are estimated from radar.
1.25″ half dollar size Public
2 SW Sissonville, WV4:42 PM EDTKanawha County
Report from mPING: Half Dollar (1.25 in.).
1.25″ half dollar size Public
4 ESE Clendenin, WV5:18 PM EDTClay County
1.00″ quarter size Public
1 S Poca, WV4:05 PM EDTPutnam County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
Poca, WV4:08 PM EDTPutnam County
Reports of nickel to quarter size hail.
1.00″ quarter size Public
1 N Sissonville, WV4:45 PM EDTKanawha County
Social media video showing quarter size hail.
1.00″ quarter size Broadcast Media
7 NW Altuda, TX4:11 PM CDTBrewster County
Quarter sized hail was reported by the Broadcast Media and by a Meteorologist from Canada at and around the US 67 and US 90 Interchange.
1.00″ quarter size Trained Spotter
1 WNW Wayne, PA5:25 PM EDTDelaware County
Time estimated from radar. Picture sent in from skywarn spotter.
1.00″ quarter size Public
Chapmanville, WV5:30 PM EDTLogan County
Photo verified through social media.
1.00″ quarter size Emergency Mngr
10 SSE Belding, TX4:58 PM CDTPecos County
Emergency manager reported quarter-sized hail 16 miles south of Fort Stockton on US 385.
1.00″ quarter size Storm Chaser
11 SSE Belding, TX5:00 PM CDTPecos County
Received a report of dime to quarter-sized hail about 15-20 miles south of Fort Stockton. The time of occurrence is partially estimated from radar.
1.00″ quarter size Emergency Mngr
21 SE Fort Stockton, TX5:48 PM CDTPecos County
Emergency manager reported quarter-sized hail 21-23 miles south/southeast of Fort Stockton along US 285.
0.75″ penny size Public
1 N White Plains, NY4:44 PM EDTWestchester County

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

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 May 20, 2026

NOAA radar put hail of an inch or more over 15 cities across 1 state on May 20, 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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