Verified storm · closed
102 mph wind verified in Jackson County, SD — August 12, 2026
Verified against measured NWS storm reports — ground-truth wind measurements, not radar hail estimates, and never forecasts.
Storm stats
| County | Jackson County, SD |
|---|---|
| Max wind (NWS reports) | 102 mph |
| Swath area | 91 mi² (235 km²) |
| First radar detection | 2026-08-12 03:45 UTC |
| Last radar detection | 2026-08-12 03:45 UTC |
| Verified | 2026-08-12 04:38 UTC |
| Swath centroid | 43.8402, -101.8832 |
| Storm ID | sw_77fbad4e |
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Jackson County, SD — verified storm record
Swath has 33 radar-verified hail storms on record for Jackson County, SD going back to July 2025, the largest measuring 5.74″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.