2026-01-29 19:41:08 (M4.2) Western Montana 47.6 -111.1 (90be5)

M4.2 Earthquake - Western Montana

Preliminary Report

Magnitude	4.2
Date-Time	Universal Time (UTC): 29 Jan 2026 19:41:08 Time near the Epicenter (1): 29 Jan 2026 12:41:08 Time in your area (1): 29 Jan 2026 11:41:08
Location	47.614N 111.129W
Depth	10 km
Distances	12.8 km (7.9 mi) NNE of Malmstrom Air Force Base, Montana 18.1 km (11.2 mi) NE of Great Falls, Montana 132.8 km (82.3 mi) NNE of Helena, Montana 208.7 km (129.4 mi) NNE of Butte, Montana 215.2 km (133.4 mi) N of Bozeman, Montana
Location Uncertainty	Horizontal: 3.2 km; Vertical 2.0 km
Parameters	Nph = 68; Dmin = 112.4 km; Rmss = 0.85 seconds; Gp = 69° Version =
Event ID	us 6000s5ba

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
National Earthquake Information Center
U.S. Geological Survey


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