Verified storm · closed
1.2–1.5" hail crossed Johnson County, KS — August 21, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Johnson County, KS |
|---|---|
| Max hail (MESH) | 1.5" |
| Mean hail (MESH) | 1.2" |
| Swath area | 4.8 mi² (13 km²) |
| Radar cells (~1 km grid) | 13 |
| First radar detection | 2026-08-21 22:44 UTC |
| Last radar detection | 2026-08-21 23:46 UTC |
| Verified | 2026-08-21 22:47 UTC |
| Swath centroid | 38.8865, -94.6988 |
| Storm ID | sw_3c0aed56 |
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Johnson County, KS — verified storm record
Swath has 11 radar-verified hail storms on record for Johnson County, KS going back to July 2025, the largest measuring 2.32″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.