Verified storm · closed
1–1.1" hail crossed Aurora County, SD — August 18, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Aurora County, SD |
|---|---|
| Max hail (MESH) | 1.1" |
| Mean hail (MESH) | 1" |
| Swath area | 3.8 mi² (10 km²) |
| Radar cells (~1 km grid) | 11 |
| First radar detection | 2026-08-18 06:46 UTC |
| Last radar detection | 2026-08-18 07:46 UTC |
| Verified | 2026-08-18 06:49 UTC |
| Swath centroid | 43.7741, -98.7432 |
| Storm ID | sw_4edfbb46 |
Address lookup — $8
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Aurora County, SD — verified storm record
Swath has 14 radar-verified hail storms on record for Aurora 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.
