Hail in Sanborn · Aug 3, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Sanborn that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 3, 2026 · noon–noon UTC
Severity
The 8th most severe storm Sanborn 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
- 13 /100
- Homes exposed
- 37 /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 Sanborn saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Only the radar-estimated size surface resolved for Aug 3, 2026 — this storm produced no NEXRAD point detections over Sanborn, so there is one map to show, not two.
The storm in context
Where Aug 3, 2026 sits in Sanborn's hail record.
This was Sanborn's 9th recorded hail day, arriving 34 days after the Jun 30, 2026 storm. By severity it ranks 8th of the 9 storms we have logged here. Radar put the day's largest stone over Sanborn at 0.5" — radar-estimated size aloft.
The Aug 3, 2026 convective day was bigger than Sanborn: the same system put hail over 172 other tracked cities, 11 of them in Iowa. Nearest: Melvin (7 miles north, up to 1"); Ashton (12 miles northwest, up to 1"); Hartley (12 miles northeast, up to 0.5").
These maps are stills. In the app this date is one of 9 Sanborn 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.
For this storm over Sanborn, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Below the severe threshold
What 0.5" hail means for Sanborn 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
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$816K
Potential roof exposure — 68 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
August 2028
Claims from this storm can typically be filed until around August 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 $14 on top of the $150 plan.
Sanborn hail history
Other storms in Sanborn.
Estimated-size surface Jun 30, 2026
1"
Estimated-size surface Jun 29, 2026
1"
Estimated-size surface Jun 27, 2026
1.75"
Estimated-size surface May 31, 2026
Estimated-size surface May 24, 2026
0.5"
Estimated-size surface May 18, 2026
2.25"
Estimated-size surface May 17, 2026
1.75"
Estimated-size surface Apr 13, 2026
2"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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