SwathIQ / Hail map / Wisconsin

Wisconsin Hail Map & History

Wisconsin's southern tier -- Milwaukee and Madison -- absorbs late-spring and summer hail from plains-fed convection. Pick a date below to see the NOAA radar swath and reports, or check a specific address.

411

hail days since 2010

days with 2″+ hail

hail days this year

4.50″

largest stone on record

Wisconsin storm date

Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Wisconsin. Radar-indicated, not a guarantee of damage.

Working Wisconsin? Turn a storm into a route.

A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Wisconsin addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.

Get free access Check an address

Hail history in Wisconsin

Since 2010, NOAA's Storm Prediction Center has logged 411 separate hail days in Wisconsin, including 85 days with hail 2″ or larger -- the size that routinely totals roofs. The largest stone on record here: 4.50″ on 2021-09-07 near 5 NNE APPLETON, OUTAGAMIE. The most recent reported hail day was 2026-06-10. Major metros watched here: Milwaukee, Madison, Green Bay, Appleton.

Top Wisconsin counties by hail frequency

County	Hail days since 2010	Largest stone
DANE	39	2.75″
TREMPEALEAU	33	3.00″
SAWYER	27	3.00″
WAUKESHA	24	3.00″
ROCK	23	2.00″
BAYFIELD	22	2.75″

Recent Wisconsin hail days

Date	Max hail	Reports
2026-06-10	1.50″	3
2026-05-27	2.00″	23
2026-05-26	1.25″	3
2026-04-27	1.00″	1
2026-04-21	1.00″	5
2026-04-17	2.75″	30
2026-04-15	1.00″	2
2026-04-14	4.00″	127

How to read the Wisconsin map

The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC ground reports. Yellow is around an inch, red is 1.5 to 2″, and purple is 2″ and up -- see how hail size maps to roof damage. Click any spot on the map to see the hail history at that point, or look up a full street address on the hail history by address tool. Today's nationwide activity is on today's hail report.

Nearby states

Tennessee · Florida · Alabama · Ohio · South Carolina · Indiana

FAQ

How often does it hail in Wisconsin?

NOAA has logged 411 hail days in Wisconsin since 2010, including 85 days with 2″+ hail.

Is the Wisconsin hail map free?

Yes, no login. A free account adds door-knock address lists and CRM exports.

How far back does the data go?

NOAA SPC storm reports since 2010, with high-resolution MRMS radar swaths for recent storms.

Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.