2023-07-29 21:29:00 (M3.1) Quarry blast British Columbia, Canada 49.7 -114.8 (90be5)

M3.1 Quarry blast - British Columbia, Canada

Preliminary Report

Magnitude	3.1
Date-Time	Universal Time (UTC): 29 Jul 2023 21:29:01 Time near the Epicenter (1): 29 Jul 2023 15:29:01 Time in your area (1): 29 Jul 2023 13:29:01
Location	49.668N 114.801W
Depth	-2 km
Distances	9.5 km (5.9 mi) SE of Sparwood, Canada 72.4 km (44.9 mi) ENE of Cranbrook, Canada 131.7 km (81.7 mi) SSW of Okotoks, Canada 143.1 km (88.7 mi) W of Lethbridge, Canada 399.0 km (247.4 mi) NNW of Helena, Montana
Location Uncertainty	Horizontal: 2.5 km; Vertical 31.6 km
Parameters	Nph = 27; Dmin = 31.9 km; Rmss = 0.26 seconds; Gp = 234° Version = 2
Event ID	mb 90022863

(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
Montana Regional Seismic Network
Montana Bureau of Mines and Geology
http://mbmgquake.mtech.edu


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