2020-12-01 18:47:59 (M3.4) Eastern Montana 45.9 -106.1 (90be5)

M3.4 Earthquake - Eastern Montana

Preliminary Report

Magnitude	3.4
Date-Time	1 Dec 2020 18:48:00 UTC 1 Dec 2020 11:48:00 near epicenter 1 Dec 2020 10:48:00 standard time in your timezone
Location	45.875N 106.135W
Depth	5 km
Distances	33.0 km (20.4 mi) NNE of Ashland, Montana 136.0 km (84.3 mi) NNE of Sheridan, Wyoming 182.9 km (113.4 mi) NNW of Gillette, Wyoming 184.1 km (114.2 mi) E of Billings, Montana 424.7 km (263.3 mi) WSW of Bismarck, North Dakota
Location Uncertainty	Horizontal: 0.7 km; Vertical 31.6 km
Parameters	Nph = 21; Dmin = 90.7 km; Rmss = 0.27 seconds; Gp = 112° Version = 2
Event ID	mb 80478344

For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
Montana Regional Seismic Network
Montana Bureau of Mines and Geology
http://mbmgquake.mtech.edu


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