Hail in Armstrong May 26, 2026
Both radar surfaces caught this storm: NEXRAD logged 4 hail signatures up to 1", and the radar-estimated size reached 0.5" aloft.
1"
≈ quarter · the largest NEXRAD radar signature84
0
none filedThe 4th most severe storm Armstrong has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 25 /100
- Homes exposed
- 39 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Armstrong 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.
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.
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Where May 26, 2026 sits in Armstrong's hail record
This was Armstrong's 7th recorded hail day, arriving 1 day after the May 25, 2026 storm. By severity it ranks 4th of the 11 storms we have logged here. Radar put the day's largest stone over Armstrong at 1" — the largest NEXRAD radar signature.
The May 26, 2026 convective day was bigger than Armstrong: the same system put hail over 259 other tracked cities, 8 of them in Iowa. Nearest: Dolliver (10 miles west, up to 1.25"); Ledyard (15 miles east, up to 0.5"); Frost (30 miles east, up to 0").
These maps are stills from Armstrong's May 26, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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 Armstrong, 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.
What 1" hail means for Armstrong roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
$1M
Potential roof exposure — 84 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Armstrong on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Armstrong storm history — this May 26, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
11 recorded storm days in Armstrong, IA
Other storms in Armstrong
Jul 4, 2026
1"
Jun 30, 2026
1"
Jun 29, 2026
1"
Jun 1, 2026
1.25"
May 25, 2026
1"
May 18, 2026
1"
May 17, 2026
May 15, 2026
2"
May 14, 2026
0.75"
Apr 13, 2026
2.25"