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 8:32:46 AM (PDT) on Monday, October 27, 2025.
The magnitude 1.9 event occurred 6 km (4 miles) NW of Big Bear City, CA.
The hypocentral depth is 6 km ( 3 miles).


Magnitude 1.9 - local magnitude (Ml)
Time Monday, October 27, 2025 at 8:32:46 AM (PDT)
Monday, October 27, 2025 at 15:32:46 (UTC)
Distance from Big Bear City, CA - 6 km (4 miles) NW (320 degrees)
Big Bear Lake, CA - 7 km (4 miles) NNE (20 degrees)
Lucerne Valley, CA - 18 km (11 miles) SSE (155 degrees)
Running Springs, CA - 23 km (14 miles) ENE (63 degrees)
Lake Arrowhead, CA - 28 km (18 miles) ENE (78 degrees)
Coordinates 34 deg. 18.1 min. N (34.302N), 116 deg. 53.2 min. W (116.886W)
Depth 5.53 km (3.40 miles)
Quality Excellent
Location Quality Parameters Nst=70, Nph=129, Dmin=5.4 km, Rmss=0.14 sec, Erho=0.1 km, Erzz=0.25 km, Gp=25 degrees
Event ID# ci41320960
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