Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #0: 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 3:35:22 PM (PDT) on Wednesday, October 1, 2025.
The magnitude 1.2 event occurred 18 km (11 miles) SSE of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Wednesday, October 1, 2025 at 3:35:22 PM (PDT)
Wednesday, October 1, 2025 at 22:35:22 (UTC)
Distance from Ridgemark, CA - 18 km (11 miles) SSE (166 degrees)
Gonzales, CA - 20 km (12 miles) NE (35 degrees)
Chualar, CA - 20 km (13 miles) ENE (63 degrees)
Hollister, CA - 23 km (14 miles) SSE (161 degrees)
Soledad, CA - 25 km (16 miles) N (2 degrees)
Coordinates 36 deg. 39.1 min. N (36.652N), 121 deg. 19.0 min. W (121.316W)
Depth 2.87 km (1.80 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=4.6 km, Rmss=0.09 sec, Erho=0.44 km, Erzz=1.02999997 km, Gp=128 degrees
Event ID# nc75243671
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For more information, see https://earthquake.usgs.gov

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