2025-09-28 07:29:53 (M3.3) Wyoming 44.8 -110.9 (90be5)

M3.3 Earthquake - Wyoming

Preliminary Report

Magnitude	3.3
Date-Time	Universal Time (UTC): 28 Sep 2025 07:29:54 Time near the Epicenter (1): 28 Sep 2025 01:29:54 Time in your area (1): 27 Sep 2025 23:29:54
Location	44.818N 110.853W
Depth	1 km
Distances	21.3 km (13.2 mi) SW of Mammoth, Wyoming 96.9 km (60.1 mi) S of Bozeman, Montana 133.1 km (82.5 mi) NE of Rexburg, Idaho 148.8 km (92.3 mi) N of Jackson, Wyoming 217.7 km (135.0 mi) SSE of Helena, Montana
Location Uncertainty	Horizontal: 0.9 km; Vertical 12.8 km
Parameters	Nph = 31; Dmin = 12.1 km; Rmss = 0.55 seconds; Gp = 36° Version = 0
Event ID	uu 80118176

(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
University of Utah Seismograph Stations
University of Utah

http://www.seis.utah.edu


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