◆ ALTON, MO HAIL HISTORY · OREGON COUNTY
Alton, MO hail history & hail map
Alton, Missouri has had 4 hail events in the past 5 years, with hail up to 2.00″ (Golf Ball). Most recent: Jun 22, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
4Hail events in the past 5 years
2.00″Largest recorded hail · Golf Ball
2.00″Largest ground report (within 3 mi)
1.25″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Alton, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Alton
| Date | Peak hail | Sources |
|---|---|---|
| Jun 22, 2026 | 0.70″ Small | 1 ground report (max 0.70″) |
| Apr 21, 2025 | 0.75″ Penny | Radar 0.75″ |
| Apr 20, 2025 | 2.00″ Golf Ball | 1 ground report (max 2.00″) |
| Aug 26, 2023 | 1.25″ Half Dollar | Radar 1.25″ |
More Missouri hail history
All Missouri cities & hail days →
Events count days with NOAA MRMS radar hail over Alton (36.700, -91.390) 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.