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 is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 3:16:09 AM (PDT) on Monday, September 1, 2025.
The magnitude 0.3 event occurred 2 km (1 miles) E (89 degrees) of Running Springs, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 0.3 - local magnitude (Ml)
Time Monday, September 1, 2025 at 3:16:09 AM (PDT)
Monday, September 1, 2025 at 10:16:09 (UTC)
Distance from Running Springs, CA - 2 km (1 miles) E (89 degrees)
Lake Arrowhead, CA - 11 km (7 miles) ESE (115 degrees)
Highland, CA - 15 km (9 miles) NE (52 degrees)
Mentone, CA - 16 km (10 miles) NNE (17 degrees)
Big Bear Lake, CA - 16 km (10 miles) WSW (256 degrees)
Coordinates 34 deg. 12.5 min. N (34.208N), 117 deg. 5.0 min. W (117.084W)
Depth 3.69 km (2.30 miles)
Quality Good
Location Quality Parameters Nst=27, Nph=44, Dmin=4.1 km, Rmss=0.17 sec, Erho=0.2 km, Erzz=0.35 km, Gp=52 degrees
Event ID# ci41280584
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