◆ ANGOSTURA RESERVOIR, SD HAIL HISTORY · FALL RIVER COUNTY
Angostura Reservoir, SD hail history & hail map
Angostura Reservoir, South Dakota has had 10 hail events in the past 5 years, with hail up to 2.75″ (Baseball). Most recent: Sep 7, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
10Hail events in the past 5 years
2.75″Largest recorded hail · Baseball
2.75″Largest ground report (within 3 mi)
2.00″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Angostura Reservoir, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Angostura Reservoir
| Date | Peak hail | Sources |
|---|---|---|
| Sep 7, 2026 | 0.75″ Penny | Radar 0.75″ |
| Aug 27, 2026 | 0.75″ Penny | 1 ground report (max 0.75″) |
| Jul 4, 2026 | 0.88″ Nickel | 1 ground report (max 0.88″) |
| Aug 26, 2024 | 1.00″ Quarter | Radar 1.00″ |
| Jul 17, 2024 | 1.25″ Half Dollar | 1 ground report (max 1.25″) |
| Oct 3, 2023 | 0.70″ Small | 1 ground report (max 0.70″) |
| Jul 29, 2023 | 1.25″ Half Dollar | Radar 1.25″ |
| Jul 18, 2023 | 2.75″ Baseball | Radar 2.00″ · 2 ground reports (max 2.75″) |
| Aug 24, 2022 | 1.25″ Half Dollar | Radar 1.25″ |
| Jun 6, 2022 | 1.25″ Half Dollar | Radar 0.75″ · 3 ground reports (max 1.25″) |
More South Dakota hail history
All South Dakota cities & hail days →
Events count days with NOAA MRMS radar hail over Angostura Reservoir (43.320, -103.430) 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.