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

A micro earthquake occurred at 1:00:39 AM (PDT) on Wednesday, September 10, 2025.
The magnitude 1.3 event occurred 12 km (8 miles) WNW of Big Bear Lake, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Wednesday, September 10, 2025 at 1:00:39 AM (PDT)
Wednesday, September 10, 2025 at 8:00:39 (UTC)
Distance from Big Bear Lake, CA - 12 km (8 miles) WNW (300 degrees)
Running Springs, CA - 13 km (8 miles) NE (37 degrees)
Lake Arrowhead, CA - 16 km (10 miles) ENE (70 degrees)
Lucerne Valley, CA - 17 km (11 miles) SSW (199 degrees)
Big Bear City, CA - 17 km (11 miles) WNW (284 degrees)
Coordinates 34 deg. 17.9 min. N (34.298N), 117 deg. 1.6 min. W (117.027W)
Depth 4.84 km (3.00 miles)
Quality Good
Location Quality Parameters Nst=63, Nph=111, Dmin=5.0 km, Rmss=0.15 sec, Erho=0.14 km, Erzz=0.39 km, Gp=56 degrees
Event ID# ci41287904
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