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 11:12:28 AM (PDT) on Sunday, August 17, 2025.
The magnitude 1.4 event occurred 3 km (2 miles) N (6 degrees) of Big Bear City, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.4 - local magnitude (Ml)
Time Sunday, August 17, 2025 at 11:12:28 AM (PDT)
Sunday, August 17, 2025 at 18:12:28 (UTC)
Distance from Big Bear City, CA - 3 km (2 miles) N (6 degrees)
Big Bear Lake, CA - 8 km (5 miles) NE (52 degrees)
Lucerne Valley, CA - 21 km (13 miles) SE (146 degrees)
Running Springs, CA - 26 km (16 miles) ENE (70 degrees)
Lake Arrowhead, CA - 32 km (20 miles) E (82 degrees)
Coordinates 34 deg. 17.3 min. N (34.288N), 116 deg. 50.5 min. W (116.841W)
Depth 6.58 km (4.10 miles)
Quality Good
Location Quality Parameters Nst=57, Nph=107, Dmin=6.7 km, Rmss=0.14 sec, Erho=0.11 km, Erzz=0.36 km, Gp=34 degrees
Event ID# ci40401354
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