Verified storm · closed
1.3–1.9" hail crossed Lawrence County, SD — August 16, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Lawrence County, SD |
|---|---|
| Max hail (MESH) | 1.9" |
| Mean hail (MESH) | 1.3" |
| Swath area | 20 mi² (52 km²) |
| Radar cells (~1 km grid) | 59 |
| First radar detection | 2026-08-16 22:12 UTC |
| Last radar detection | 2026-08-17 00:26 UTC |
| Verified | 2026-08-16 22:15 UTC |
| Swath centroid | 44.1877, -103.5026 |
| Storm ID | sw_43942071 |
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Lawrence County, SD — verified storm record
Swath has 43 radar-verified hail storms on record for Lawrence County, SD going back to July 2025, the largest measuring 5.37″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.