◆ RELIANCE ARPT, SD HAIL HISTORY · LYMAN COUNTY
Reliance Arpt, SD hail history & hail map
Reliance Arpt, South Dakota has had 3 hail events in the past 5 years, with hail up to 2.25″ (Golf Ball). Most recent: Aug 18, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
3Hail events in the past 5 years
2.25″Largest recorded hail · Golf Ball
1.00″Largest ground report (within 3 mi)
2.25″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Reliance Arpt, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Reliance Arpt
| Date | Peak hail | Sources |
|---|---|---|
| Aug 18, 2026 | 0.75″ Penny | Radar 0.75″ |
| Jun 5, 2026 | 1.00″ Quarter | Radar 1.00″ |
| Jul 29, 2025 | 2.25″ Golf Ball | Radar 2.25″ · 1 ground report (max 1.00″) |
More South Dakota hail history
All South Dakota cities & hail days →
Events count days with NOAA MRMS radar hail over Reliance Arpt (43.780, -99.600) 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.