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

A micro earthquake occurred at 7:54:09 AM (PDT) on Friday, October 3, 2025.
The magnitude 0.4 event occurred 15 km (10 miles) SSE of Anza, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 0.4 - local magnitude (Ml)
Time Friday, October 3, 2025 at 7:54:09 AM (PDT)
Friday, October 3, 2025 at 14:54:09 (UTC)
Distance from Anza, CA - 15 km (10 miles) SSE (157 degrees)
Warner Springs, CA - 16 km (10 miles) N (8 degrees)
Aguanga, CA - 24 km (15 miles) E (94 degrees)
Palomar Observatory, CA - 25 km (16 miles) ENE (71 degrees)
Lake Henshaw, CA - 25 km (16 miles) NE (35 degrees)
Coordinates 33 deg. 25.6 min. N (33.427N), 116 deg. 36.5 min. W (116.609W)
Depth 9.38 km (5.80 miles)
Quality Excellent
Location Quality Parameters Nst=17, Nph=28, Dmin=7.5 km, Rmss=0.09 sec, Erho=0.18 km, Erzz=0.44 km, Gp=63 degrees
Event ID# ci41102135
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