Hail map for Beloit, WI — April 17, 2026
NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of Beloit on April 17, 2026.
- Max hail size
- 1.50″
- half dollar
- Impact rating
- 5/10
- from stone size
- Size bands over the city
- 2
- distinct radar bands
- Reached the ground
- 70%
- NOAA POSH probability
- Measured on the ground
- 2.00″
- 3.5 mi away · Trained Spotter
NOAA's Probability of Severe Hail peaked at 70% over Beloit that day — high: around even odds of 1″ hail reaching the ground. It is a separate model from the size estimate above: one asks how big the stones were in the storm, the other asks whether they made it down.
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
Work Beloit on the live hail map
- The whole state around Beloit, with this swath already on it
- Three years of hail swaths, filterable by stone size
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Did hail hit your address?
This page covers Beloit 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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What people on the ground measured in Beloit, WI on April 17, 2026
10 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.
- 2.00″ hen egg size Trained Spotter3 E Beloit, WI · 3.5 mi away5:29 PM CDTRock County
- 1.75″ golf ball size Broadcast MediaBeloit, WI · 1.0 mi away5:16 PM CDTRock County
Relayed from Broadcast Media (WMTV Madison). Time estimated from radar.
- 1.75″ golf ball size Public4 NE Durand, IL · 12.8 mi away4:48 PM CDTWinnebago County
Relayed via mping. Time estimated by radar.
- 1.50″ half dollar size PublicSouth Beloit, IL · 1.3 mi away5:14 PM CDTWinnebago County
Relayed via mping. Time estimated by radar.
- 1.50″ half dollar size PublicSouth Beloit, IL · 1.3 mi away5:20 PM CDTWinnebago County
Report from mPING: Ping Pong Ball (1.50 in.).
- 1.50″ half dollar size Public1 WSW Janesville, WI · 11.8 mi away6:12 PM CDTRock County
Time estimated from radar.
- 1.25″ half dollar size PublicSouth Beloit, IL · 1.3 mi away5:16 PM CDTWinnebago County
Report from mPING: Half Dollar (1.25 in.).
- 1.00″ quarter size Public3 W Rockton, IL · 5.6 mi away5:06 PM CDTWinnebago County
Relayed via mping.
- 0.75″ penny size Public3 E South Beloit, IL · 2.5 mi away5:15 PM CDTWinnebago County
Report from mPING: Dime (0.75 in.).
- 0.50″ penny size PublicSouth Beloit, IL · 1.3 mi away5:10 PM CDTWinnebago County
Report from mPING: Half-inch (0.50 in.).
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.
Beloit hail on April 17, 2026
NOAA radar estimated stones up to 1.50 inches — half dollar size — within about 5 miles of Beloit that day, across 2 distinct size bands. Sizes vary street to street inside a single swath.