Hail map for Janesville, WI — April 2, 2026
Hail up to 1.50″ — half dollar size — was estimated within 5 miles of Janesville on April 2, 2026.
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- Max hail size
- 1.50″
- half dollar
- Impact rating
- 5/10
- from stone size
- Size bands over the city
- 3
- distinct radar bands
- Reached the ground
- 30%
- Severe-hail probability
- Measured on the ground
- 1.50″
- 1.9 mi away · Broadcast Media
Severe-hail probability peaked at 30% over Janesville that day — low to moderate: the radar signature was there, ground impact less certain. 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 radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
Did hail hit your address?
This page covers Janesville 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.
Check my addressFree, and no account needed to look it up. If hail did hit, you'll have the date and the stone size in writing — which is the first thing an adjuster asks for.
What people on the ground measured in Janesville, WI on April 2, 2026
4 reports filed with the National Weather Service — 1 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.
- 1.50″ half dollar size Broadcast Media2 NNE Janesville, WI · 1.9 mi away6:22 PM CDTRock County
- 1.25″ half dollar size Broadcast Media1 WNW Janesville, WI · 0.8 mi away6:19 PM CDTRock County
Hail at Mercy Hospital.
- 0.88″ penny size Emergency Mngr3 NNW Janesville, WI · 3.3 mi away7:07 PM CDTRock County
- 0.75″ penny size Public2 E Janesville, WI · 2.5 mi away6:27 PM CDTRock County
These are verified ground reports, updated 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.
Shopping for a hail app to work Janesville, WI?
This page is one storm. If you are deciding which tool to work Janesville, WI with all season, these compare the ones roofers actually buy — with every price taken from the vendor's own site and linked.
- Best hail tracking apps, comparedHailMate, HailTrace, Hail Recon, HailStrike and RadarScope — every published price sourced and linked, and who each one is genuinely right for.
- HailMate vs HailTraceStreet-level NOAA swaths on a map your crew can knock, with the CRM already inside — instead of quote-only meteorologist maps billed on top of one.
- Hail map apps for roofers (and the Hail Recon alternative)Every storm on one map instead of loading dates one at a time — plus the canvassing and the whole claim, monthly, for what one state costs them a year.
- Best canvassing apps, comparedHailMate, SalesRabbit, SPOTIO, Knockio, RoofLink and Badger Maps — every published price sourced and linked, and two of them publish none.
Janesville hail on April 2, 2026
Hail up to 1.50 inches — half dollar size — was estimated within about 5 miles of Janesville that day, across 3 distinct size bands. Sizes vary street to street inside a single swath.