Hail in Osceola Mar 15, 2026
NEXRAD caught this storm: 2 hail signatures up to 0.75". The radar-estimated size surface had no signal to model this day.
0.75"
≈ penny to nickel · the largest NEXRAD radar signature44
0
none filedThe 6th most severe storm Osceola 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
- 19 /100
- Homes exposed
- 33 /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 Osceola saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Only the NEXRAD radar-signature surface resolved for Mar 15, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
Where Mar 15, 2026 sits in Osceola's hail record
This was Osceola's 2nd recorded hail day, arriving 10 days after the Mar 5, 2026 storm. By severity it ranks 6th of the 9 storms we have logged here. Radar put the day's largest stone over Osceola at 0.75" — the largest NEXRAD radar signature.
The Mar 15, 2026 convective day was bigger than Osceola: the same system put hail over 695 other tracked cities, 4 of them in Iowa. Nearest: Kalona (122 miles east, up to 1"); Riverside (127 miles east, up to 1"); Iowa City (136 miles northeast, up to 0.75").
These maps are stills from Osceola's Mar 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.
Nobody on the ground filed a report over Osceola 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.
What 0.75" hail means for Osceola roofs
Hail this size sits right at the edge of the National Weather Service severe threshold. Newer roofs usually shrug it off, but aging or already-worn shingles can bruise, and soft metals — vents, flashing, gutters — often show the first dents.
$528K
Potential roof exposure — 44 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Osceola on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Osceola storm history — this Mar 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.
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9 recorded storm days in Osceola, IA
Other storms in Osceola
Jul 27, 2026
0.75"
Jul 20, 2026
0.75"
Jun 11, 2026
2.75"
Jun 10, 2026
1.25"
Apr 23, 2026
1"
Apr 15, 2026
0.75"
Apr 3, 2026
0.75"
Mar 5, 2026
1"