How big was the hail on April 21, 2026?

The maximum estimated stone size anywhere in the country that day was 1.00 inches, over Racine, WI. 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 · April 21, 2026

Hail map — April 21, 2026

Name: US hail map — April 21, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 2 cities across 1 state on April 21, 2026. The largest stones — 1.00″, quarter size — fell over Racine, WI.

Hail swath map for Racine, WI on April 21, 2026 showing 1.00 inch hail. — Largest rendered swath of the day: Racine, WI — 1.00″ hail. Each city below has its own map for this storm.

States hit: 1
Cities hit: 2
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 April 21, 2026

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

Wisconsin2 cities · 1.00″

Hardest hit on April 21, 2026

Racine, WI1.00″ · quarter Mount Pleasant, WI1.00″ · quarter

What people on the ground measured in the US on April 21, 2026

13 reports filed with the National Weather Service — 2 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.

1.00″ quarter size Public
Greenfield, WI12:21 PM CDTMilwaukee County
Observation with pictures.
1.00″ quarter size Official NWS Obs
2 WSW Saint Francis, WI12:24 PM CDTMilwaukee County
Milwaukee Airport Observer pictures.
1.00″ quarter size Public
3 W Saint Francis, WI12:26 PM CDTMilwaukee County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
4 SE Wind Lake, WI12:56 PM CDTRacine County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
2 SE Elmwood Park, WI1:19 PM CDTRacine County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
6 NE Firebaugh, CA3:36 PM PDTMadera County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
3 NNE Orange Cove, CA5:35 PM PDTTulare County
Hail around penny size to quarter size. Location approximate.
0.88″ penny size Public
6 E Wind Lake, WI12:54 PM CDTRacine County
0.75″ penny size Public
Clovis, CA4:58 PM PDTFresno County
Public X post from NE Clovis showing penny sized hail next to pennies for reference.
0.50″ penny size Public
Orland, CA4:00 PM PDTGlenn County
Report relayed through social media of accumulating half in hail within the city of Orland.
0.30″ penny size Public
1 WSW Clovis, CA4:48 PM PDTFresno County
Facebook DM stating hail larger than pea size.
0.25″ penny size Public
4 ESE Madera, CA4:30 PM PDTMadera County
Public X post showing approximately pea-sized hail accumulating on road.
0.25″ penny size Public
1 SW Clovis, CA4:58 PM PDTFresno County
Sequoia Homes resident phone report of pea-sized hail alongside lightning and 0.4 inch daily rainfall.

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 April 21, 2026

NOAA radar put hail of an inch or more over 2 cities across 1 state on April 21, 2026. The largest stones — 1.00 inches, quarter size — were over Racine, WI. Every state hit is listed on this page, and every city under it.

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