Hail in Lake Geneva · May 15, 2026
NEXRAD logged 0 hail signatures up to 1"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
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Convective day · May 15, 2026 · noon–noon UTC
Severity
The 8th most severe storm Lake Geneva 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
- 0 /100
- Ground truth
- 0 /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 Lake Geneva 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.
Only the NEXRAD radar-signature surface resolved for May 15, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
The storm in context
Where May 15, 2026 sits in Lake Geneva's hail record.
This was Lake Geneva's 5th recorded hail day, arriving 28 days after the Apr 17, 2026 storm. By severity it ranks 8th of the 8 storms we have logged here. Radar put the day's largest stone over Lake Geneva at 1" — the largest NEXRAD radar signature.
The May 15, 2026 convective day was bigger than Lake Geneva: the same system put hail over 444 other tracked cities, 43 of them in Wisconsin. Nearest: Burlington (12 miles northeast, up to 0"); Wilmot (13 miles east, up to 0"); Salem (18 miles east, up to 0").
These maps are stills. In the app this date is one of 8 Lake Geneva 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.
No ground reports were filed with the National Weather Service for this storm over Lake Geneva. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Damage-capable hail signal
What 1" hail means for Lake Geneva 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
Lake Geneva hail history
Other storms in Lake Geneva.
Estimated-size surface Aug 9, 2026
1.5"
Estimated-size surface Jul 27, 2026
1"
Estimated-size surface Jul 3, 2026
1.5"
Estimated-size surface Apr 17, 2026
1"
Estimated-size surface Apr 14, 2026
1"
Estimated-size surface Mar 31, 2026
1.25"
Estimated-size surface Mar 10, 2026
0.5"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.