Wisconsin hail map — August 16, 2025
NOAA radar detected hail of an inch or more over 4 Wisconsin cities on August 16, 2025. The largest stones — 2.00″, hen egg size — fell over Janesville.

- Cities hit
- 4
- in Wisconsin
- 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.
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Wisconsin cities hit on August 16, 2025
What people on the ground measured in Wisconsin on August 16, 2025
12 reports filed with the National Weather Service — 3 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.
- 2.00″ hen egg size Public2 NW Winslow, WI7:24 PM CDTGreen County
Report from mPING: Hen Egg (2.00 in.).
- 1.75″ golf ball size Emergency Mngr1 W New Lisbon, WI2:38 PM CDTJuneau County
Corrects previous hail report from 1 W New Lisbon for time based on radar. Golf ball size hail reported west of New Lisbon.
- 1.75″ golf ball size Emergency Mngr1 W New Lisbon, WI2:58 PM CDTJuneau County
Golf ball size hail reported west of New Lisbon.
- 1.50″ half dollar size Storm Chaser2 W Janesville, WI2:20 PM CDTRock County
Social media report from local storm chaser of the size of ping pong balls on the west side of Janesville. Time estimated from radar.
- 1.50″ half dollar size Public1 N Clinton, WI2:40 PM CDTRock County
Image of ping-pong ball sized hail from a social media report, with a quarter for scale.
- 1.00″ quarter size Public4 NE Cross Plains, WI1:12 PM CDTDane County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public1 S Oregon, WI1:51 PM CDTDane County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public2 NW Janesville, WI2:20 PM CDTRock County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Emergency Mngr2 SSW Wyeville, WI2:20 PM CDTMonroe County
Time of hail estimated with radar.
- 1.00″ quarter size Public3 SW Janesville, WI2:21 PM CDTRock County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public1 NNW Janesville, WI2:22 PM CDTRock County
Public Facebook report via video of many hailstones shredding leaves off a backyard tree; size estimated. Time estimated by radar.
- 1.00″ quarter size Public3 NE Janesville, WI2:25 PM CDTRock County
Report from mPING: Quarter (1.00 in.).
Showing the 12 largest of 17 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 August 16, 2025
NOAA radar put hail of an inch or more over 4 Wisconsin cities that day. The largest stones — 2.00 inches, hen egg size — were over Janesville. Every city hit is listed above with its own stone size.