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

A micro earthquake occurred at 7:04:49 AM (PDT) on Thursday, October 2, 2025.
The magnitude 1.1 event occurred 4 km (2 miles) NNE (28 degrees) of Running Springs, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.1 - local magnitude (Ml)
Time Thursday, October 2, 2025 at 7:04:49 AM (PDT)
Thursday, October 2, 2025 at 14:04:49 (UTC)
Distance from Running Springs, CA - 4 km (2 miles) NNE (28 degrees)
Lake Arrowhead, CA - 9 km (6 miles) E (99 degrees)
Highland, CA - 16 km (10 miles) NE (42 degrees)
Big Bear Lake, CA - 17 km (10 miles) W (267 degrees)
Crestline, CA - 18 km (11 miles) E (92 degrees)
Coordinates 34 deg. 14.1 min. N (34.236N), 117 deg. 5.5 min. W (117.091W)
Depth 5.38 km (3.30 miles)
Quality Good
Location Quality Parameters Nst=43, Nph=68, Dmin=5.4 km, Rmss=0.14 sec, Erho=0.15 km, Erzz=0.36 km, Gp=57 degrees
Event ID# ci41101727
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