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 #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 9:27:37 PM (PDT) on Monday, October 20, 2025.
The magnitude 0.9 event occurred 14 km (9 miles) SE of Anza, CA.
The hypocentral depth is 9 km ( 5 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Monday, October 20, 2025 at 9:27:37 PM (PDT)
Tuesday, October 21, 2025 at 4:27:37 (UTC)
Distance from Anza, CA - 14 km (9 miles) SE (126 degrees)
Warner Springs, CA - 23 km (14 miles) NNE (19 degrees)
Aguanga, CA - 29 km (18 miles) E (82 degrees)
Borrego Springs, CA - 30 km (19 miles) NNW (327 degrees)
La Quinta, CA - 30 km (19 miles) SW (228 degrees)
Coordinates 33 deg. 28.8 min. N (33.481N), 116 deg. 33.2 min. W (116.553W)
Depth 8.51 km (5.30 miles)
Quality Good
Location Quality Parameters Nst=58, Nph=97, Dmin=4.8 km, Rmss=0.16 sec, Erho=0.13 km, Erzz=0.35 km, Gp=50 degrees
Event ID# ci41112095
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