2023-08-20 07:21:16 (M3.3) Southern California 34.3 -116.9 (90be5)

M3.3 Earthquake - Southern California

Preliminary Report

Magnitude	3.3
Date-Time	Universal Time (UTC): 20 Aug 2023 07:21:16 Time near the Epicenter (1): 20 Aug 2023 00:21:16 Time in your area (1): 19 Aug 2023 23:21:16
Location	34.343N 116.869W
Depth	0 km
Distances	9.4 km (5.8 mi) NNW of Big Bear City, California 31.3 km (19.4 mi) ENE of Lake Arrowhead, California 34.0 km (21.1 mi) ESE of Apple Valley, California 37.9 km (23.5 mi) NNE of Yucaipa, California 231.3 km (143.4 mi) NW of Mexicali, Mexico
Location Uncertainty	Horizontal: 0.1 km; Vertical 0.4 km
Parameters	Nph = 155; Dmin = 3.9 km; Rmss = 0.18 seconds; Gp = 22° Version = 4
Event ID	ci 39645178

(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
CISN Southern California Management Center
Caltech Seismological Laboratory
U.S. Geological Survey

http://www.cisn.org/scmc.html
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