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 9:57:59 AM (PDT) on Thursday, October 9, 2025.
The magnitude 0.8 event occurred 7 km (4 miles) NNE (22 degrees) of Running Springs, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Thursday, October 9, 2025 at 9:57:59 AM (PDT)
Thursday, October 9, 2025 at 16:57:59 (UTC)
Distance from Running Springs, CA - 7 km (4 miles) NNE (22 degrees)
Lake Arrowhead, CA - 10 km (6 miles) E (79 degrees)
Big Bear Lake, CA - 16 km (10 miles) W (279 degrees)
Crestline, CA - 19 km (12 miles) E (82 degrees)
Highland, CA - 19 km (12 miles) NE (37 degrees)
Coordinates 34 deg. 16.0 min. N (34.266N), 117 deg. 4.8 min. W (117.081W)
Depth 5.42 km (3.40 miles)
Quality Good
Location Quality Parameters Nst=18, Nph=27, Dmin=7.0 km, Rmss=0.19 sec, Erho=0.28 km, Erzz=0.74 km, Gp=63 degrees
Event ID# ci41105799
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