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 #2: 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 6:13:55 AM (PST) on Wednesday, December 31, 2025.
The magnitude 1.3 event occurred 1 km (1 miles) N of La Puente, CA.
The hypocentral depth is 9 km ( 5 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Wednesday, December 31, 2025 at 6:13:55 AM (PST)
Wednesday, December 31, 2025 at 14:13:55 (UTC)
Distance from La Puente, CA - 1 km (1 miles) N (359 degrees)
Valinda, CA - 1 km (1 miles) SSW (203 degrees)
West Puente Valley, CA - 3 km (2 miles) SE (140 degrees)
Avocado Heights, CA - 4 km (2 miles) E (95 degrees)
West Covina, CA - 4 km (2 miles) SW (228 degrees)
Coordinates 34 deg. 2.0 min. N (34.033N), 117 deg. 57.0 min. W (117.950W)
Depth 8.51 km (5.30 miles)
Quality Fair
Location Quality Parameters Nst=17, Nph=16, Dmin=25.2 km, Rmss=0.389999986 sec, Erho=1.95 km, Erzz=5.59000015 km, Gp=121 degrees
Event ID# ci41150119
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