Wisconsin hail map — May 15, 2025
NOAA radar detected hail of an inch or more over 13 Wisconsin cities on May 15, 2025. The largest stones — 1.50″, half dollar size — fell over Oak Creek.
- Cities hit
- 13
- 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.
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Wisconsin cities hit on May 15, 2025
What people on the ground measured in Wisconsin on May 15, 2025
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.
- 4.00″ softball size Public2 W Altoona, WI4:15 PM CDTEau Claire County
Relayed with photo by WQOW.
- 3.75″ baseball size Public2 WSW Altoona, WI4:18 PM CDTEau Claire County
Email with picture.
- 3.50″ baseball size PublicAltoona, WI4:15 PM CDTEau Claire County
Relayed with photo from WQOW.
- 3.00″ baseball size Broadcast Media2 WSW Altoona, WI4:19 PM CDTEau Claire County
3 inch diameter hail measured at the WEAU studios.
- 2.75″ baseball size PublicAltoona, WI4:18 PM CDTEau Claire County
Report from mPING: Baseball (2.75 in.).
- 2.75″ baseball size Broadcast Media3 SSW Altoona, WI4:18 PM CDTEau Claire County
Corrects previous hail report from 3 SSW Altoona. Corrects previous hail report from 3 SSW Altoona. measured at the WQOW studios.
- 2.50″ hen egg size Trained Spotter1 W Altoona, WI4:15 PM CDTEau Claire County
- 2.50″ hen egg size Public1 W Altoona, WI4:16 PM CDTEau Claire County
Damage to siding reported as well.
- 2.50″ hen egg size Trained Spotter4 W Waterford, WI6:13 PM CDTRacine County
Tennis-Baseball sized hail causing significant damage to vehicles in far western Waterford near Walworth county border.
- 2.50″ hen egg size Public1 SE Ixonia, WI6:14 PM CDTJefferson County
Report from mPING: Tennis Ball (2.50 in.).
- 2.25″ hen egg size Broadcast Media3 SSW Altoona, WI4:18 PM CDTEau Claire County
Corrects previous hail report from 3 SSW Altoona. measured at the WQOW studios.
- 2.25″ hen egg size Public3 NNW Altoona, WI4:20 PM CDTEau Claire County
Showing the 12 largest of 175 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 Wisconsin hail days
Wisconsin hail on May 15, 2025
NOAA radar put hail of an inch or more over 13 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.