Verified storm · closed
1.1–1.5" hail crossed Shannon County, SD — August 5, 2025
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Shannon County, SD |
|---|---|
| Max hail (MESH) | 1.5" |
| Mean hail (MESH) | 1.1" |
| Swath area | 4.8 mi² (13 km²) |
| Radar cells (~1 km grid) | 14 |
| First radar detection | 2025-08-05 09:00 UTC |
| Last radar detection | 2025-08-05 11:00 UTC |
| Verified | 2025-08-05 09:00 UTC |
| Swath centroid | 43.6757, -102.7950 |
| Storm ID | sw_29258c74 |
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