Hail size 2"
3 E Montour Tama County
“Delayed report. Time estimated by radar. (DMX)”
— NOAA / SPC storm report
Hail in Montour Apr 15, 2026
The radar-estimated size surface caught this storm, reaching 1" aloft. NEXRAD logged no point detections over Montour this day.
Largest hailstone
1"
≈ quarter · radar-estimated size aloft Homes in the hail footprint
1,284
Ground reports
2
2 hailThe 2nd most severe storm Montour has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.6 /10
- Hail size
- 25 /100
- Homes exposed
- 62 /100
- Ground truth
- 33 /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 Montour saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Radar-estimated hail size
Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
1"
Only the radar-estimated size surface resolved for Apr 15, 2026 — this storm produced no NEXRAD point detections over Montour, so there is one map to show, not two.
Where Apr 15, 2026 sits in Montour's hail record
This was Montour's 2nd recorded hail day, arriving 16 days after the Mar 30, 2026 storm. By severity it ranks 2nd of the 5 storms we have logged here. Radar put the day's largest stone over Montour at 1" — radar-estimated size aloft.
The Apr 15, 2026 convective day was bigger than Montour: the same system put hail over 425 other tracked cities, 127 of them in Iowa. Nearest: Marshalltown (5 miles west, up to 1.25"); Garwin (7 miles north, up to 0.75"); Tama (7 miles south, up to 0.5").
These maps are stills from Montour's Apr 15, 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.
Hail reports
2 reports Hail size 1.75"
3 ENE Montour Tama County
“Ping Pong to Golf Ball. (DMX)”
— NOAA / SPC storm report
What 1" hail means for Montour 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.
What this storm is worth to a roofer
$15M
Potential roof exposure — 1,284 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
6 jobs
Illustrative work
~$90K
Claims from this storm can typically be filed until around April 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Montour on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Montour storm history — this Apr 15, 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
Montour hail history
← All hail in Montour 5 recorded storm days in Montour, IA
Other storms in Montour
Jul 2, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed 
Jun 28, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Apr 17, 2026
2" Signatures 2" Estimated 1.25"
No ground reports filed 
Mar 30, 2026
A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.