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 8:12:09 AM (PDT) on Sunday, September 28, 2025.
The magnitude 1.2 event occurred 39 km (24 miles) NE (51 degrees) of Big Bear City, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Sunday, September 28, 2025 at 8:12:09 AM (PDT)
Sunday, September 28, 2025 at 15:12:09 (UTC)
Distance from Big Bear City, CA - 39 km (24 miles) NE (51 degrees)
Lucerne Valley, CA - 42 km (26 miles) E (84 degrees)
Yucca Valley, CA - 42 km (26 miles) N (349 degrees)
Ludlow, CA - 42 km (26 miles) SW (231 degrees)
Joshua Tree, CA - 43 km (27 miles) NNW (334 degrees)
Coordinates 34 deg. 28.8 min. N (34.481N), 116 deg. 31.0 min. W (116.517W)
Depth 8.79 km (5.50 miles)
Quality Good
Location Quality Parameters Nst=31, Nph=51, Dmin=15.4 km, Rmss=0.17 sec, Erho=0.23 km, Erzz=0.74 km, Gp=89 degrees
Event ID# ci41100175
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