Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California


Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 1:10:14 PM (PDT) on Thursday, August 21, 2025.
The magnitude 1.3 event occurred 3 km (2 miles) E of Big Bear Lake, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Thursday, August 21, 2025 at 1:10:14 PM (PDT)
Thursday, August 21, 2025 at 20:10:14 (UTC)
Distance from Big Bear Lake, CA - 3 km (2 miles) E (101 degrees)
Big Bear City, CA - 4 km (3 miles) SW (236 degrees)
Running Springs, CA - 21 km (13 miles) E (80 degrees)
Lucerne Valley, CA - 24 km (15 miles) SSE (161 degrees)
Yucaipa, CA - 27 km (17 miles) NNE (33 degrees)
Coordinates 34 deg. 14.4 min. N (34.240N), 116 deg. 53.0 min. W (116.884W)
Depth 8.26 km (5.10 miles)
Quality Good
Location Quality Parameters Nst=49, Nph=88, Dmin=4.2 km, Rmss=0.17 sec, Erho=0.15 km, Erzz=0.33 km, Gp=31 degrees
Event ID# ci41271240
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