◆ RIVERSIDE, IA HAIL HISTORY · WASHINGTON COUNTY
Riverside, IA hail history & hail map
Riverside, Iowa has had 6 hail events in the past 5 years, with hail up to 2.00″ (Golf Ball). Most recent: Apr 16, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
6Hail events in the past 5 years
2.00″Largest recorded hail · Golf Ball
1.00″Largest ground report (within 3 mi)
2.00″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Riverside, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Riverside
| Date | Peak hail | Sources |
|---|---|---|
| Apr 16, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| May 7, 2024 | 0.88″ Nickel | 1 ground report (max 0.88″) |
| Apr 16, 2024 | 0.70″ Small | 1 ground report (max 0.70″) |
| May 7, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Jul 11, 2022 | 1.00″ Quarter | Radar 1.00″ · 1 ground report (max 1.00″) |
| Feb 22, 2022 | 2.00″ Golf Ball | Radar 2.00″ |
More Iowa hail history
Events count days with NOAA MRMS radar hail over Riverside (41.490, -91.580) 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.