2021-10-29 09:19:22 (M3.4) Western Montana 46.1 -112.2 (90be5)

M3.4 Earthquake - Western Montana

Preliminary Report

Magnitude	3.4
Date-Time	29 Oct 2021 09:19:22 UTC 29 Oct 2021 03:19:22 near epicenter 29 Oct 2021 01:19:22 standard time in your timezone
Location	46.105N 112.167W
Depth	10 km
Distances	15.1 km (9.3 mi) SSW of Boulder, Montana 30.6 km (19.0 mi) ENE of Butte, Montana 55.2 km (34.2 mi) S of Helena, Montana 99.5 km (61.7 mi) WNW of Bozeman, Montana 164.2 km (101.8 mi) ESE of Missoula, Montana
Location Uncertainty	Horizontal: 1.9 km; Vertical 2.0 km
Parameters	Nph = 37; Dmin = 37.5 km; Rmss = 0.63 seconds; Gp = 60° Version =
Event ID	us 7000fppr

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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