Wisconsin · August 16, 2025

Wisconsin hail map — August 16, 2025

NOAA radar detected hail of an inch or more over 5 Wisconsin cities on August 16, 2025. The largest stones — 2.00″, hen egg size — fell over Janesville.

Hail swath map for Janesville, WI on August 16, 2025 showing 2.00 inch hail.
Swath over Janesville on August 16, 2025 — 2.00″ hail. Each city below has its own map for this storm.
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Cities hit
5
in Wisconsin
Largest stone
2.00″
hen egg size
Impact rating
7/10
from stone size

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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What people on the ground measured in Wisconsin on August 16, 2025

12 reports filed with the National Weather Service — 3 from trained observers 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 Public
    2 NW Winslow, WI7:24 PM CDTGreen County

    Report from mPING: Hen Egg (2.00 in.).

  • 1.75″ golf ball size Emergency Mngr
    1 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 Mngr
    1 W New Lisbon, WI2:58 PM CDTJuneau County

    Golf ball size hail reported west of New Lisbon.

  • 1.50″ half dollar size Storm Chaser
    2 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 Public
    1 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 Public
    4 NE Cross Plains, WI1:12 PM CDTDane County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 S Oregon, WI1:51 PM CDTDane County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 NW Janesville, WI2:20 PM CDTRock County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Emergency Mngr
    2 SSW Wyeville, WI2:20 PM CDTMonroe County

    Time of hail estimated with radar.

  • 1.00″ quarter size Public
    3 SW Janesville, WI2:21 PM CDTRock County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    1 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 Public
    3 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.

FAQ

Wisconsin hail on August 16, 2025

NOAA radar put hail of an inch or more over 5 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.

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