How big was the hail on August 3, 2023?

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 · August 3, 2023

Wisconsin hail map — August 3, 2023

Name: Wisconsin hail map — August 3, 2023
Creator: HailMate

NOAA radar detected hail of an inch or more over 3 Wisconsin cities on August 3, 2023. The largest stones — 1.50″, half dollar size — fell over Manitowoc.

Hail swath map for Manitowoc, WI on August 3, 2023 showing 1.50 inch hail. — Swath over Manitowoc on August 3, 2023 — 1.50″ hail. Each city below has its own map for this storm.

Cities hit: 3; 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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All of Wisconsin at street level, with this storm already on it
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Homeowners

Did hail hit your address?

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 August 3, 2023

Manitowoc, WI1.50″ · half dollar Green Bay, WI1.00″ · quarter Oshkosh, WI1.00″ · quarter

What people on the ground measured in Wisconsin on August 3, 2023

11 reports filed with the National Weather Service — 1 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
2 NNE Manitowoc, WI4:09 PM CDTManitowoc County
1.00″ quarter size Public
1 NNW Kiel, WI6:36 PM CDTManitowoc County
Report from mPING: Quarter (1.00 in.).
0.70″ penny size Public
3 ENE New Holstein, WI6:18 PM CDTManitowoc County
Report from mPING: Dime (0.75 in.).
0.63″ penny size Cocorahs
2 NW Two Rivers, WI3:44 PM CDTManitowoc County
0.50″ penny size Public
Chilton, WI6:19 PM CDTCalumet County
Report from mPING: Half-inch (0.50 in.).
0.38″ penny size Cocorahs
Wrightstown, WI5:25 PM CDTBrown County
0.25″ penny size Public
Dyckesville, WI2:24 PM CDTKewaunee County
relayed via social media.
0.25″ penny size Trained Spotter
Luxemburg, WI2:32 PM CDTKewaunee County
0.25″ penny size Public
New Franken, WI3:02 PM CDTBrown County
relayed via social media.
0.25″ penny size Public
1 WNW Mishicot, WI3:37 PM CDTManitowoc County
0.25″ penny size Public
2 NW Two Rivers, WI3:49 PM CDTManitowoc County

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 August 3, 2023

Colorado8 cities · 1.50″New York2 cities · 1.50″Utah2 cities · 1.00″Missouri1 city · 1.00″Mississippi1 city · 1.00″

The full US hail map for August 3, 2023 →

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 August 3, 2023

NOAA radar put hail of an inch or more over 3 Wisconsin cities that day. The largest stones — 1.50 inches, half dollar size — were over Manitowoc. Every city hit is listed above with its own stone size.

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