“(GRB)”
— NOAA / SPC storm report
Hail in Clintonville · Apr 13, 2026
Convective day · Apr 13, 2026 · noon–noon UTC
Severity
The most severe storm Clintonville has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 44 /100
- Homes exposed
- 76 /100
- Ground truth
- 17 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Clintonville saw the hail — from two instruments
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
The storm in context
Where Apr 13, 2026 sits in Clintonville's hail record.
This was Clintonville's 2nd recorded hail day, arriving 14 days after the Mar 30, 2026 storm. By severity it ranks 1st of the 6 storms we have logged here. Radar put the day's largest stone over Clintonville at 1.75" — the largest NEXRAD radar signature.
The Apr 13, 2026 convective day was bigger than Clintonville: the same system put hail over 467 other tracked cities, 108 of them in Wisconsin. Nearest: Pulaski (14 miles southeast, up to 0.75"); Shiocton (14 miles south, up to 0.75"); Marion (15 miles west, up to 3.75").
These maps are stills. In the app this date is one of 6 Clintonville storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Hail reports
1 reportHigh damage potential
What 1.75" hail means for Clintonville roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$77M
Potential roof exposure — 6,416 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 32 jobs
- Illustrative work
- ~$480K
Close just 0.5% of the 6,416 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
April 2028
Claims from this storm can typically be filed until around April 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $1,347 on top of the $150 plan.
Clintonville hail history
Other storms in Clintonville.
Sep 3, 2026
0.75"
Estimated-size surface Jul 27, 2026
1.75"
Estimated-size surface Jun 30, 2026
1.75"
Estimated-size surface Jun 10, 2026
1.5"
Estimated-size surface Mar 30, 2026
1"The next storm won’t wait for you.
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