Verified storm · closed
1.2–1.8" hail crossed Sully County, SD — September 6, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Sully County, SD |
|---|---|
| Max hail (MESH) | 1.8" |
| Mean hail (MESH) | 1.2" |
| Swath area | 44 mi² (115 km²) |
| Radar cells (~1 km grid) | 130 |
| First radar detection | 2026-09-06 13:20 UTC |
| Last radar detection | 2026-09-06 16:08 UTC |
| Verified | 2026-09-06 13:22 UTC |
| Swath centroid | 44.7085, -100.2224 |
| Storm ID | sw_0b98a850 |
Address lookup — $8
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Sully County, SD — verified storm record
Swath has 11 radar-verified hail storms on record for Sully County, SD going back to July 2025, the largest measuring 3.33″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.
