Hail in Lu Verne · May 17, 2026
Convective day · May 17, 2026 · noon–noon UTC
Severity
The 10th most severe storm Lu Verne 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
- 0 /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 Lu Verne saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Only the NEXRAD radar-signature surface resolved for May 17, 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 17, 2026 sits in Lu Verne's hail record.
This was Lu Verne's 4th recorded hail day, arriving 2 days after the May 15, 2026 storm. By severity it ranks 10th of the 10 storms we have logged here. Radar put the day's largest stone over Lu Verne at 0" — radar-estimated size aloft.
The May 17, 2026 convective day was bigger than Lu Verne: the same system put hail over 894 other tracked cities, 139 of them in Iowa. Nearest: Corwith (5 miles east, up to 0"); Algona (9 miles northwest, up to 1"); Titonka (14 miles north, up to 1").
These maps are stills. In the app this date is one of 10 Lu Verne 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 Lu Verne. 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.
Below the severe threshold
What 0" hail means for Lu Verne roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Lu Verne hail history
Other storms in Lu Verne.
Estimated-size surface Aug 8, 2026
1"
Estimated-size surface Jul 20, 2026
1.25"
Estimated-size surface Jul 4, 2026
1"
Estimated-size surface Jul 2, 2026
1.75"
Estimated-size surface Jul 1, 2026
1"
Estimated-size surface Jun 28, 2026
1.75"
Estimated-size surface May 15, 2026
1.75"
Estimated-size surface Apr 23, 2026
1"
Estimated-size surface Mar 6, 2026
0.5"The next storm won’t wait for you.
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