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 event has been reviewed by a seismologist.

A micro earthquake occurred at 6:58:50 PM (PST) on Monday, December 1, 2025.
The magnitude 0.8 event occurred 4 km (2 miles) NNW of Lake Henshaw, CA.
The hypocentral depth is 13 km ( 8 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Monday, December 1, 2025 at 6:58:50 PM (PST)
Tuesday, December 2, 2025 at 2:58:50 (UTC)
Distance from Lake Henshaw, CA - 4 km (2 miles) NNW (341 degrees)
Palomar Observatory, CA - 12 km (7 miles) SE (138 degrees)
Warner Springs, CA - 13 km (8 miles) W (267 degrees)
Aguanga, CA - 20 km (13 miles) SSE (156 degrees)
Valley Center, CA - 25 km (15 miles) ENE (75 degrees)
Coordinates 33 deg. 16.5 min. N (33.276N), 116 deg. 46.6 min. W (116.777W)
Depth 13.21 km (8.20 miles)
Quality Good
Location Quality Parameters Nst=46, Nph=82, Dmin=4.7 km, Rmss=0.15 sec, Erho=0.14 km, Erzz=0.41 km, Gp=28 degrees
Event ID# ci41130711
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