Hail in Mount Ayr · May 17, 2026
NEXRAD logged 11 hail signatures up to 2.75"; the estimated-size surface had no signal that day. At 2.75" — baseball — 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 · May 17, 2026 · noon–noon UTC
Severity
The most severe storm Mount Ayr 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
- 69 /100
- Homes exposed
- 61 /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 Mount Ayr 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 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 Mount Ayr's hail record.
This was Mount Ayr's 6th recorded hail day, arriving 1 day after the May 16, 2026 storm. By severity it ranks 1st of the 11 storms we have logged here. Radar put the day's largest stone over Mount Ayr at 2.75" — the largest NEXRAD radar signature.
The May 17, 2026 convective day was bigger than Mount Ayr: the same system put hail over 894 other tracked cities, 139 of them in Iowa. Nearest: Redding (15 miles southwest, up to 1.25"); Blockton (19 miles southwest, up to 1.25"); Creston (23 miles northwest, up to 1").
These maps are stills. In the app this date is one of 11 Mount Ayr 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 Mount Ayr 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 2.75" hail means for Mount Ayr 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
$14M
Potential roof exposure — 1,126 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 6 jobs
- Illustrative work
- ~$90K
Close just 0.5% of the 1,126 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
May 2028
Claims from this storm can typically be filed until around May 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 $236 on top of the $150 plan.
Mount Ayr hail history
Other storms in Mount Ayr.
Estimated-size surface Aug 4, 2026
0.75"
Estimated-size surface Jun 13, 2026
0.5"
Estimated-size surface Jun 11, 2026
2.25"
Estimated-size surface Jun 10, 2026
0.75"
Estimated-size surface May 18, 2026
1"
Estimated-size surface May 16, 2026
2.5"
Estimated-size surface Apr 17, 2026
1"
Estimated-size surface Apr 15, 2026
1"
Estimated-size surface Apr 3, 2026
1.25"
Estimated-size surface Mar 5, 2026
1"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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For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.