Verified storm · closed
1.1–1.4" hail crossed Grand County, UT — September 12, 2025
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Grand County, UT |
|---|---|
| Max hail (MESH) | 1.4" |
| Mean hail (MESH) | 1.1" |
| Swath area | 5.9 mi² (15 km²) |
| Radar cells (~1 km grid) | 21 |
| First radar detection | 2025-09-12 20:00 UTC |
| Last radar detection | 2025-09-12 21:00 UTC |
| Verified | 2025-09-12 20:00 UTC |
| Swath centroid | 38.7521, -109.3617 |
| Storm ID | sw_114cdf29 |
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