How big was the hail on July 27, 2026?

The maximum estimated stone size anywhere in the country that day was 2.00 inches, over Joliet, IL. 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 · July 27, 2026

Hail map — July 27, 2026

Name: US hail map — July 27, 2026
Creator: HailMate

NOAA radar detected hail of an inch or more over 145 cities across 9 states on July 27, 2026. The largest stones — 2.00″, hen egg size — fell over Joliet, IL.

Hail swath map for Joliet, IL on July 27, 2026 showing 2.00 inch hail. — Largest rendered swath of the day: Joliet, IL — 2.00″ hail. Each city below has its own map for this storm.

States hit: 9
Cities hit: 145
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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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 July 27, 2026

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

Illinois127 cities · 2.00″Wisconsin9 cities · 2.00″Indiana1 city · 1.50″Iowa3 cities · 1.00″New York1 city · 1.00″Pennsylvania1 city · 1.00″New Jersey1 city · 1.00″Michigan1 city · 1.00″Ohio1 city · 1.00″

Hardest hit on July 27, 2026

Showing the 24 largest of 145 cities hit. The rest are under their state above.

What people on the ground measured in the US on July 27, 2026

15 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.

4.50″ softball size Public
2 NW Gresham, WI10:28 AM CDTShawano County
Social media image of grapefruit size hail northwest of Gresham. Time estimated from radar.
3.00″ baseball size Broadcast Media
7 S Port Wing, WI2:45 AM CDTBayfield County
3.00″ baseball size Public
2 ESE Sturgeon Bay, WI9:45 AM CDTDoor County
Relayed via WLUK TV. Location estimated.
3.00″ baseball size Public
Algoma, WI10:11 AM CDTKewaunee County
Corrects time of previous hail report from Algoma.
3.00″ baseball size Public
2 NNE Belle Plaine, WI10:50 AM CDTShawano County
Photo received on social media.
3.00″ baseball size Public
Algoma, WI11:11 AM CDTKewaunee County
3.00″ baseball size Trained Spotter
2 WSW Shorewood, IL3:41 PM CDTWill County
Photo shows hail stone at least 3 inches in diameter that fell near Four Seasons Park in Shorewood. Hail stone was collected and frozen 2 minutes after it fell. Multiple other hail stones golf ball size. Time estimated by radar.
2.75″ baseball size Public
7 S Port Wing, WI2:45 AM CDTBayfield County
Report from mPING: Baseball (2.75 in.).
2.75″ baseball size Public
1 ESE Lyndhurst, WI10:25 AM CDTShawano County
Report forwarded via Amateur Radio.
2.75″ baseball size Public
Neosho, WI11:05 AM CDTDodge County
Delayed Report - Photos of hail around 2.75 inch diameter received on social media. Time of 11:05 AM was estimated from radar.
2.75″ baseball size Public
Woodland, IL5:40 PM CDTIroquois County
Photo relayed via social media shows hailstone slightly larger than a baseball. Time estimated by radar.
2.50″ hen egg size Public
1 W Oconomowoc, WI11:21 AM CDTWaukesha County
2.50″ hen egg size Trained Spotter
1 WNW Westmont, IL12:18 PM CDTDuPage County
2.50″ hen egg size Public
3 W Woodland, IL5:33 PM CDTIroquois County
Photo relayed by broadcast media shows hail up to the size of a tennis ball. Time estimated by radar.
2.50″ hen egg size Broadcast Media
1 SSE Milford, IL6:00 PM CDTIroquois County
Photo relayed by broadcast media shows hailstones ranging in size from golf ball to tennis ball size. Time estimated by radar.

Showing the 15 largest of 132 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 July 27, 2026

NOAA radar put hail of an inch or more over 145 cities across 9 states on July 27, 2026. The largest stones — 2.00 inches, hen egg size — were over Joliet, IL. Every state hit is listed on this page, and every city under it.

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