◆ CLARKSON VLY, MO HAIL HISTORY · ST. LOUIS COUNTY
Clarkson Vly, MO hail history & hail map
Clarkson Vly, Missouri has had 8 hail events in the past 5 years, with hail up to 2.00″ (Golf Ball). Most recent: Apr 27, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
8Hail events in the past 5 years
2.00″Largest recorded hail · Golf Ball
2.00″Largest ground report (within 3 mi)
1.50″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Clarkson Vly, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Clarkson Vly
| Date | Peak hail | Sources |
|---|---|---|
| Apr 27, 2026 | 1.25″ Half Dollar | 3 ground reports (max 1.25″) |
| May 16, 2025 | 2.00″ Golf Ball | Radar 1.50″ · 7 ground reports (max 2.00″) |
| May 26, 2024 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Apr 2, 2024 | 0.75″ Penny | Radar 0.75″ |
| Apr 1, 2024 | 1.75″ Golf Ball | Radar 1.00″ · 1 ground report (max 1.75″) |
| Sep 26, 2023 | 0.25″ Small | 1 ground report (max 0.25″) |
| Jun 4, 2023 | 0.70″ Small | 1 ground report (max 0.70″) |
| Apr 15, 2023 | 1.00″ Quarter | 2 ground reports (max 1.00″) |
More Missouri hail history
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Events count days with NOAA MRMS radar hail over Clarkson Vly (38.630, -90.580) 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.