◆ PROMISE, SD HAIL HISTORY · DEWEY COUNTY
Promise, SD hail history & hail map
Promise, South Dakota has had 5 hail events in the past 5 years, with hail up to 4.00″ (Softball). Most recent: Aug 30, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
5Hail events in the past 5 years
4.00″Largest recorded hail · Softball
4.00″Largest ground report (within 3 mi)
1.25″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Promise, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Promise
| Date | Peak hail | Sources |
|---|---|---|
| Aug 30, 2026 | 0.75″ Penny | Radar 0.75″ |
| Jul 27, 2025 | 1.50″ Ping Pong Ball | Radar 1.25″ · 1 ground report (max 1.50″) |
| Jun 21, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Jun 20, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Jul 5, 2022 | 4.00″ Softball | Radar 1.25″ · 1 ground report (max 4.00″) |
More South Dakota hail history
All South Dakota cities & hail days →
Events count days with NOAA MRMS radar hail over Promise (45.330, -100.630) 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.