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 8:35:42 PM (PDT) on Monday, October 6, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Monday, October 6, 2025 at 8:35:42 PM (PDT)
Tuesday, October 7, 2025 at 3:35:42 (UTC)
Distance from Pacifica, CA - 3 km (2 miles) SE (137 degrees)
San Bruno, CA - 6 km (4 miles) SW (224 degrees)
Millbrae, CA - 6 km (4 miles) W (263 degrees)
Montara, CA - 7 km (5 miles) NE (42 degrees)
Hillsborough, CA - 7 km (5 miles) WNW (285 degrees)
Coordinates 37 deg. 35.5 min. N (37.591N), 122 deg. 27.6 min. W (122.460W)
Depth 8.79 km (5.50 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=3.7 km, Rmss=0.02 sec, Erho=0.46 km, Erzz=1.10000002 km, Gp=103 degrees
Event ID# nc75245871
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