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 11:07:06 AM (PDT) on Tuesday, October 14, 2025.
The magnitude 1.2 event occurred 2 km (1 miles) SSE of Portola Valley, CA.
The hypocentral depth is 9 km ( 5 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Tuesday, October 14, 2025 at 11:07:06 AM (PDT)
Tuesday, October 14, 2025 at 18:07:06 (UTC)
Distance from Portola Valley, CA - 2 km (1 miles) SSE (155 degrees)
Woodside, CA - 7 km (4 miles) SSE (160 degrees)
West Menlo Park, CA - 7 km (5 miles) SSW (197 degrees)
Stanford, CA - 8 km (5 miles) SW (222 degrees)
Los Altos Hills, CA - 8 km (5 miles) W (262 degrees)
Coordinates 37 deg. 22.2 min. N (37.370N), 122 deg. 13.6 min. W (122.227W)
Depth 8.77 km (5.40 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=9, Dmin=3.4 km, Rmss=0.07 sec, Erho=0.6 km, Erzz=0.540000021 km, Gp=139 degrees
Event ID# nc75249226
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For more information, see https://earthquake.usgs.gov

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