How big was the hail on May 7, 2024?

The maximum estimated stone size anywhere in Wisconsin that day was 1.50 inches. 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.

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 the whole of Wisconsin on a real interactive map with this swath and three years of others already on it. $79/mo, and the canvassing tools come with it.

Wisconsin · May 7, 2024

Wisconsin hail map — May 7, 2024

Name: Wisconsin hail map — May 7, 2024
Creator: HailMate

NOAA radar detected hail of an inch or more over 4 Wisconsin cities on May 7, 2024. The largest stones — 1.50″, half dollar size — fell over Oak Creek.

Hail swath map for Oak Creek, WI on May 7, 2024 showing 1.50 inch hail. — Swath over Oak Creek on May 7, 2024 — 1.50″ hail. Each city below has its own map for this storm.

Cities hit: 4; in Wisconsin
Largest stone: 1.50″; half dollar size
Impact rating: 5/10; 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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HailMate's canvassing map: hail swaths colour-banded by stone size, from yellow through red to purple, laid over a satellite view of a Texas territory, with hail swath and territory controls.

All of Wisconsin at street level, with this storm already on it
Three years of hail swaths, filterable by stone size
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Homeowners

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This page covers Wisconsin 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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Wisconsin cities hit on May 7, 2024

Oak Creek, WI1.50″ · half dollar Caledonia, WI1.50″ · half dollar South Milwaukee, WI1.50″ · half dollar Waukesha, WI1.00″ · quarter

What people on the ground measured in Wisconsin on May 7, 2024

12 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.

1.75″ golf ball size Trained Spotter
3 SE Cumberland, WI4:22 PM CDTBarron County
1.50″ half dollar size Public
Oak Creek, WI3:31 PM CDTMilwaukee County
Picture with measurement shown on WISN 12.
1.25″ half dollar size Public
South Milwaukee, WI3:30 PM CDTMilwaukee County
Photos of hail provided via email.
1.25″ half dollar size Public
1 E Oak Creek, WI3:32 PM CDTMilwaukee County
Report from mPING: Half Dollar (1.25 in.).
1.00″ quarter size Public
1 W Pewaukee, WI2:18 PM CDTWaukesha County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
Sussex, WI2:24 PM CDTWaukesha County
1.00″ quarter size Public
1 S South Milwaukee, WI3:30 PM CDTMilwaukee County
1.00″ quarter size Public
1 S Oak Creek, WI3:30 PM CDTMilwaukee County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Trained Spotter
South Milwaukee, WI3:30 PM CDTMilwaukee County
Photos of measured 1in hail from spotter on Facebook.
1.00″ quarter size Public
2 S Oak Creek, WI3:36 PM CDTMilwaukee County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
2 SW Pleasant Prairie, WI3:38 PM CDTKenosha County
Report from mPING: Quarter (1.00 in.).
1.00″ quarter size Public
1 W South Milwaukee, WI3:42 PM CDTMilwaukee County
Report from mPING: Quarter (1.00 in.).

Showing the 12 largest of 52 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 states hit on May 7, 2024

Illinois32 cities · 2.00″Indiana6 cities · 1.50″

The full US hail map for May 7, 2024 →

Other Wisconsin hail days

August 18, 20261 city · 1.00″August 11, 20261 city · 1.00″August 9, 20263 cities · 1.00″July 27, 20269 cities · 2.00″July 3, 20261 city · 1.00″July 2, 20263 cities · 1.00″July 1, 20262 cities · 2.00″June 29, 20261 city · 1.00″June 24, 20262 cities · 1.00″June 16, 20261 city · 1.00″June 10, 20261 city · 1.00″May 27, 20262 cities · 2.00″

Every hail day across Wisconsin →

FAQ

Wisconsin hail on May 7, 2024

NOAA radar put hail of an inch or more over 4 Wisconsin cities that day. The largest stones — 1.50 inches, half dollar size — were over Oak Creek. Every city hit is listed above with its own stone size.

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