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 9:59:10 PM (PST) on Thursday, December 4, 2025.
The magnitude 1.4 event occurred 23 km (15 miles) SW of Ocotillo Wells, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.4 - local magnitude (Ml)
Time Thursday, December 4, 2025 at 9:59:10 PM (PST)
Friday, December 5, 2025 at 5:59:10 (UTC)
Distance from Ocotillo Wells, CA - 23 km (15 miles) SW (221 degrees)
Pine Valley, CA - 28 km (18 miles) NE (50 degrees)
Julian, CA - 30 km (19 miles) ESE (110 degrees)
Borrego Springs, CA - 31 km (19 miles) SSE (166 degrees)
Ocotillo, CA - 40 km (25 miles) NW (314 degrees)
Coordinates 32 deg. 59.0 min. N (32.984N), 116 deg. 17.8 min. W (116.297W)
Depth 6.94 km (4.30 miles)
Quality Good
Location Quality Parameters Nst=62, Nph=110, Dmin=3.3 km, Rmss=0.17 sec, Erho=0.14 km, Erzz=0.37 km, Gp=36 degrees
Event ID# ci41133015
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