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 10:46:52 AM (PST) on Sunday, November 9, 2025.
The magnitude 1.0 event occurred 4 km (2 miles) SE of San Ramon, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Sunday, November 9, 2025 at 10:46:52 AM (PST)
Sunday, November 9, 2025 at 18:46:52 (UTC)
Distance from San Ramon, CA - 4 km (2 miles) SE (129 degrees)
Dublin, CA - 6 km (4 miles) N (352 degrees)
Diablo, CA - 8 km (5 miles) S (173 degrees)
Danville, CA - 8 km (5 miles) SE (146 degrees)
Blackhawk, CA - 8 km (5 miles) SSW (207 degrees)
Coordinates 37 deg. 45.6 min. N (37.760N), 121 deg. 56.8 min. W (121.947W)
Depth 7.57 km (4.70 miles)
Quality Fair
Location Quality Parameters Nst=5, Nph=5, Dmin=3.3 km, Rmss=0.01 sec, Erho=1.01 km, Erzz=2.06999993 km, Gp=162 degrees
Event ID# nc75261051
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