◆ OSTERDOCK, IA HAIL HISTORY · CLAYTON COUNTY
Osterdock, IA hail history & hail map
Osterdock, Iowa has had 3 hail events in the past 5 years, with hail up to 1.75″ (Golf Ball). Most recent: Jul 2, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
3Hail events in the past 5 years
1.75″Largest recorded hail · Golf Ball
1.25″Largest ground report (within 3 mi)
1.75″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Osterdock, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Osterdock
| Date | Peak hail | Sources |
|---|---|---|
| Jul 2, 2026 | 1.75″ Golf Ball | Radar 1.75″ |
| Sep 23, 2025 | 0.75″ Penny | Radar 0.75″ |
| Apr 18, 2025 | 1.25″ Half Dollar | Radar 1.25″ · 1 ground report (max 1.25″) |
More Iowa hail history
Events count days with NOAA MRMS radar hail over Osterdock (42.720, -91.190) or an NWS / CoCoRaHS hail report within 3 miles. Data window: NOAA MRMS radar hail swaths Oct 2021 – Nov 2026; NWS / NCEI Storm Events reports Nov 2024 – Jul 2026; CoCoRaHS volunteer reports Oct 2021 – present. Radar hail sizes are estimates, not ground truth; hail at any single address can differ.