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 1:12:38 PM (PDT) on Sunday, September 7, 2025.
The magnitude 1.2 event occurred 3 km (2 miles) SSW of Los Altos Hills, CA.
The hypocentral depth is 4 km ( 3 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Sunday, September 7, 2025 at 1:12:38 PM (PDT)
Sunday, September 7, 2025 at 20:12:38 (UTC)
Distance from Los Altos Hills, CA - 3 km (2 miles) SSW (198 degrees)
Los Altos, CA - 4 km (3 miles) SW (223 degrees)
Loyola, CA - 4 km (3 miles) W (278 degrees)
Mountain View, CA - 6 km (4 miles) WSW (240 degrees)
Portola Valley, CA - 8 km (5 miles) ESE (111 degrees)
Coordinates 37 deg. 21.4 min. N (37.357N), 122 deg. 8.8 min. W (122.147W)
Depth 4.31 km (2.70 miles)
Quality Good
Location Quality Parameters Nst=10, Nph=10, Dmin=3.8 km, Rmss=0.09 sec, Erho=0.44 km, Erzz=0.610000014 km, Gp=140 degrees
Event ID# nc75234647
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For more information, see https://earthquake.usgs.gov

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