Verified storm · active
1.5–3.7" hail crossed Fergus County, MT — September 7, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | Fergus County, MT |
|---|---|
| Max hail (MESH) | 3.7" |
| Mean hail (MESH) | 1.5" |
| Swath area | 663 mi² (1,718 km²) |
| Radar cells (~1 km grid) | 2,043 |
| First radar detection | 2026-09-07 00:58 UTC |
| Last radar detection | 2026-09-07 06:04 UTC |
| Verified | 2026-09-07 01:00 UTC |
| Swath centroid | 47.3068, -109.5411 |
| Storm ID | sw_bade041d |

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Fergus County, MT — verified storm record
Swath has 50 radar-verified hail storms on record for Fergus County, MT going back to July 2025, the largest measuring 3.78″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.