Hail in Sumner · Aug 7, 2026
The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Sumner that day. At 2" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Convective day · Aug 7, 2026 · noon–noon UTC
Severity
The most severe storm Sumner 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
- 50 /100
- Homes exposed
- 68 /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 Sumner 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.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Aug 7, 2026 — this storm produced no NEXRAD point detections over Sumner, so there is one map to show, not two.
The storm in context
Where Aug 7, 2026 sits in Sumner's hail record.
This was Sumner's 4th recorded hail day, arriving 58 days after the Jun 10, 2026 storm. By severity it ranks 1st of the 5 storms we have logged here. Radar put the day's largest stone over Sumner at 2" — radar-estimated size aloft.
The Aug 7, 2026 convective day was bigger than Sumner: the same system put hail over 709 other tracked cities, 114 of them in Iowa. Nearest: Fredericksburg (9 miles northwest, up to 0.75"); Hawkeye (10 miles northeast, up to 0.5"); Tripoli (12 miles southwest, up to 1.25").
These maps are stills. In the app this date is one of 5 Sumner 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.
Nobody on the ground filed a report over Sumner for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Severe hail signal
What 2" hail means for Sumner roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$32M
Potential roof exposure — 2,641 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 13 jobs
- Illustrative work
- ~$195K
Close just 0.5% of the 2,641 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
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 $555 on top of the $150 plan.
Sumner hail history
Other storms in Sumner.
Estimated-size surface Aug 10, 2026
0.5"
Estimated-size surface Jun 10, 2026
0.5"
Estimated-size surface May 16, 2026
1.75"
Estimated-size surface Apr 17, 2026
1.25"Take your next area into the field.
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