Verified storm · active
1.1–2.9" hail crossed Corson County, SD — September 5, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Corson County, SD |
|---|---|
| Max hail (MESH) | 2.9" |
| Mean hail (MESH) | 1.1" |
| Swath area | 181 mi² (470 km²) |
| Radar cells (~1 km grid) | 542 |
| First radar detection | 2026-09-05 21:10 UTC |
| Last radar detection | 2026-09-05 23:14 UTC |
| Verified | 2026-09-05 21:12 UTC |
| Swath centroid | 45.6373, -101.1603 |
| Storm ID | sw_e7940f75 |
Address lookup — $8
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Corson County, SD — verified storm record
Swath has 37 radar-verified hail storms on record for Corson County, SD going back to July 2025, the largest measuring 3.99″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.
