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 10:57:32 PM (PDT) on Tuesday, October 7, 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 Tuesday, October 7, 2025 at 10:57:32 PM (PDT)
Wednesday, October 8, 2025 at 5:57:32 (UTC)
Distance from Pacifica, CA - 3 km (2 miles) SE (137 degrees)
San Bruno, CA - 6 km (4 miles) SW (227 degrees)
Millbrae, CA - 7 km (4 miles) W (264 degrees)
Montara, CA - 7 km (5 miles) NE (40 degrees)
South San Francisco, CA - 8 km (5 miles) SW (215 degrees)
Coordinates 37 deg. 35.6 min. N (37.593N), 122 deg. 27.7 min. W (122.462W)
Depth 9.05 km (5.60 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=9, Dmin=3.6 km, Rmss=0.02 sec, Erho=0.75 km, Erzz=0.839999974 km, Gp=123 degrees
Event ID# nc75246406
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For more information, see https://earthquake.usgs.gov

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