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 2:03:44 AM (PST) on Friday, December 5, 2025.
The magnitude 1.5 event occurred 2 km (1 miles) NNE (27 degrees) of Millbrae, CA.
The hypocentral depth is 12 km ( 7 miles).


Magnitude 1.5 - duration magnitude (Md)
Time Friday, December 5, 2025 at 2:03:44 AM (PST)
Friday, December 5, 2025 at 10:03:44 (UTC)
Distance from Millbrae, CA - 2 km (1 miles) NNE (27 degrees)
San Bruno, CA - 3 km (2 miles) ESE (118 degrees)
Burlingame, CA - 4 km (2 miles) NNW (346 degrees)
Hillsborough, CA - 5 km (3 miles) N (4 degrees)
South San Francisco, CA - 5 km (3 miles) SSE (147 degrees)
Coordinates 37 deg. 36.9 min. N (37.616N), 122 deg. 22.6 min. W (122.376W)
Depth 11.62 km (7.20 miles)
Quality Excellent
Location Quality Parameters Nst=15, Nph=15, Dmin=5.4 km, Rmss=0.05 sec, Erho=0.41 km, Erzz=0.610000014 km, Gp=83 degrees
Event ID# nc75274706
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