“Report from mPING: Half Dollar (1.25 in.) Time confirmed from radar. (MKX)”
— NOAA / SPC storm report
Hail in Horicon · Jul 27, 2026
Convective day · Jul 27, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Horicon 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
- 25 /100
- Homes exposed
- 74 /100
- Ground truth
- 33 /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 Horicon 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.
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.
Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Horicon, so there is one map to show, not two.
The storm in context
Where Jul 27, 2026 sits in Horicon's hail record.
This was Horicon's 3rd recorded hail day, arriving 73 days after the May 15, 2026 storm. By severity it ranks 2nd of the 4 storms we have logged here. Radar put the day's largest stone over Horicon at 1" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Horicon: the same system put hail over 803 other tracked cities, 128 of them in Wisconsin. Nearest: Mayville (5 miles east, up to 1"); Iron Ridge (7 miles south, up to 1.5"); Brownsville (7 miles north, up to 1").
These maps are stills. In the app this date is one of 4 Horicon 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
2 reports“Report from mPING: Quarter (1.00 in.) Time confirmed from radar. (MKX)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Mayville — beyond Horicon itself.
Damage-capable hail signal
What 1" hail means for Horicon roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$58M
Potential roof exposure — 4,809 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 24 jobs
- Illustrative work
- ~$360K
Close just 0.5% of the 4,809 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
July 2028
Claims from this storm can typically be filed until around July 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 $1,010 on top of the $150 plan.
Horicon hail history
Other storms in Horicon.
Sep 3, 2026
2.5"May 15, 2026
1"Mar 31, 2026
0.5"The next storm won’t wait for you.
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