Wind gust 60 mph
3 WNW Fremont Mahaska County
“Delayed report. (DMX)”
— NOAA / SPC storm report
Hail in Oskaloosa Apr 15, 2026
The radar-estimated size surface caught this storm, reaching 0.5" aloft. NEXRAD logged no point detections over Oskaloosa this day.
Largest hailstone
0.5"
≈ pea to penny · radar-estimated size aloft Homes in the hail footprint
25
Ground reports
1
1 windThe 5th most severe storm Oskaloosa 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.
1.7 /10
- Hail size
- 13 /100
- Homes exposed
- 28 /100
- Ground truth
- 17 /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 Oskaloosa 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
0.5"
Only the radar-estimated size surface resolved for Apr 15, 2026 — this storm produced no NEXRAD point detections over Oskaloosa, so there is one map to show, not two.
Where Apr 15, 2026 sits in Oskaloosa's hail record
This was Oskaloosa's 2nd recorded hail day, arriving 13 days after the Apr 2, 2026 storm. By severity it ranks 5th of the 7 storms we have logged here. Radar put the day's largest stone over Oskaloosa at 0.5" — radar-estimated size aloft.
The Apr 15, 2026 convective day was bigger than Oskaloosa: the same system put hail over 425 other tracked cities, 127 of them in Iowa. Nearest: Cedar (9 miles southeast, up to 0.5"); Bussey (13 miles west, up to 0.5"); Fremont (13 miles east, up to 0.5").
These maps are stills from Oskaloosa'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.
Wind reports
1 report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Reports came from Fremont — beyond Oskaloosa itself.
What 0.5" hail means for Oskaloosa roofs
Hail under three-quarters of an inch stays below the National Weather Service severe threshold and rarely breaks shingles outright. But repeated small-hail events accelerate granule loss and shorten roof life — on older roofs, it's still worth a conversation.
What this storm is worth to a roofer
$300K
Potential roof exposure — 25 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage. 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 Oskaloosa on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Oskaloosa 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
Oskaloosa hail history
← All hail in Oskaloosa 7 recorded storm days in Oskaloosa, IA
Other storms in Oskaloosa
Jun 17, 2026
1.25" Estimated 1.25"
No ground reports filed 
Jun 11, 2026
2" Estimated 2"
1
ground report 
Jun 10, 2026
0.5" Estimated 0.5"
No ground reports filed 
May 18, 2026
0.5" Estimated 0.5"
No ground reports filed 
Apr 23, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed 
Apr 2, 2026
0.75" Signatures 0.75"
No ground reports filed
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 2, 2026.