Hail in Rock Rapids · Aug 28, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Rock Rapids that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 28, 2026 · noon–noon UTC
Severity
The 8th most severe storm Rock Rapids 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
- 49 /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 Rock Rapids 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 28, 2026 — this storm produced no NEXRAD point detections over Rock Rapids, so there is one map to show, not two.
The storm in context
Where Aug 28, 2026 sits in Rock Rapids's hail record.
This was Rock Rapids's 6th recorded hail day, arriving 25 days after the Aug 3, 2026 storm. By severity it ranks 8th of the 8 storms we have logged here. Radar put the day's largest stone over Rock Rapids at 0.5" — radar-estimated size aloft.
The Aug 28, 2026 convective day was bigger than Rock Rapids: the same system put hail over 185 other tracked cities, 8 of them in Iowa. Nearest: Doon (17 miles southwest, up to 0.5"); Larchwood (18 miles west, up to 0.5"); Hull (21 miles south, up to 0.5").
These maps are stills. In the app this date is one of 8 Rock Rapids 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 Rock Rapids. 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 0.5" hail means for Rock Rapids 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
$3.2M
Potential roof exposure — 270 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 270 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 $57 on top of the $150 plan.
Rock Rapids hail history
Other storms in Rock Rapids.
Estimated-size surface Sep 6, 2026
0.75"
Estimated-size surface Sep 1, 2026
0.5"
Estimated-size surface Aug 3, 2026
0.75"
Estimated-size surface Jul 4, 2026
1.75"
Estimated-size surface Jun 29, 2026
1.75"
Estimated-size surface Jun 27, 2026
1"
Estimated-size surface May 17, 2026
2.75"Take your next area into the field.
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