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

A micro earthquake occurred at 4:31:37 PM (PDT) on Sunday, August 3, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) E (94 degrees) of Big Bear Lake, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Sunday, August 3, 2025 at 4:31:37 PM (PDT)
Sunday, August 3, 2025 at 23:31:37 (UTC)
Distance from Big Bear Lake, CA - 3 km (2 miles) E (94 degrees)
Big Bear City, CA - 4 km (3 miles) WSW (239 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 (32 degrees)
Coordinates 34 deg. 14.5 min. N (34.242N), 116 deg. 53.0 min. W (116.883W)
Depth 8.31 km (5.20 miles)
Quality Good
Location Quality Parameters Nst=42, Nph=68, Dmin=4.1 km, Rmss=0.19 sec, Erho=0.18 km, Erzz=0.37 km, Gp=32 degrees
Event ID# ci41252296
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