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 event has been reviewed by a seismologist.

A micro earthquake occurred at 7:17:21 AM (PST) on Monday, December 15, 2025.
The magnitude 1.5 event occurred 8 km (5 miles) N of Westmorland, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.5 - local magnitude (Ml)
Time Monday, December 15, 2025 at 7:17:21 AM (PST)
Monday, December 15, 2025 at 15:17:21 (UTC)
Distance from Westmorland, CA - 8 km (5 miles) N (357 degrees)
Calipatria, CA - 11 km (7 miles) W (260 degrees)
Brawley, CA - 17 km (11 miles) NNW (328 degrees)
Niland, CA - 18 km (11 miles) SW (215 degrees)
Bombay Beach, CA - 29 km (18 miles) SSE (160 degrees)
Coordinates 33 deg. 6.5 min. N (33.109N), 115 deg. 37.6 min. W (115.626W)
Depth 8.79 km (5.50 miles)
Quality Good
Location Quality Parameters Nst=34, Nph=52, Dmin=4.5 km, Rmss=0.24 sec, Erho=0.25 km, Erzz=0.61 km, Gp=67 degrees
Event ID# ci41352200
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