Hail in Schaller · May 17, 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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Convective day · May 17, 2026 · noon–noon UTC
Severity
The 6th most severe storm Schaller 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 Schaller saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
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 Schaller's hail record.
This was Schaller's 2nd recorded hail day, arriving 2 days after the May 15, 2026 storm. By severity it ranks 6th of the 6 storms we have logged here. Radar put the day's largest stone over Schaller at 1" — the largest NEXRAD radar signature.
The May 17, 2026 convective day was bigger than Schaller: the same system put hail over 894 other tracked cities, 139 of them in Iowa. Nearest: Storm Lake (10 miles northeast, up to 1"); Holstein (10 miles west, up to 0"); Alta (14 miles north, up to 1").
These maps are stills. In the app this date is one of 6 Schaller 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 Schaller. 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 Schaller 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
Schaller hail history
Other storms in Schaller.
Estimated-size surface Sep 6, 2026
0.75"
Estimated-size surface Aug 6, 2026
0.75"
Estimated-size surface Jul 8, 2026
1.5"
Estimated-size surface Jun 16, 2026
0.75"
Estimated-size surface May 15, 2026
2"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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.