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 4:01:12 AM (PDT) on Saturday, August 9, 2025.
The magnitude 1.2 event occurred 11 km (7 miles) NE (46 degrees) of Running Springs, CA.
The hypocentral depth is 6 km ( 3 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Saturday, August 9, 2025 at 4:01:12 AM (PDT)
Saturday, August 9, 2025 at 11:01:12 (UTC)
Distance from Running Springs, CA - 11 km (7 miles) NE (46 degrees)
Big Bear Lake, CA - 11 km (7 miles) WNW (290 degrees)
Lake Arrowhead, CA - 16 km (10 miles) ENE (78 degrees)
Big Bear City, CA - 16 km (10 miles) W (276 degrees)
Lucerne Valley, CA - 19 km (12 miles) SSW (195 degrees)
Coordinates 34 deg. 16.6 min. N (34.277N), 117 deg. 1.3 min. W (117.021W)
Depth 5.50 km (3.40 miles)
Quality Excellent
Location Quality Parameters Nst=63, Nph=116, Dmin=2.7 km, Rmss=0.14 sec, Erho=0.12 km, Erzz=0.28 km, Gp=51 degrees
Event ID# ci41257144
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