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 10:56:59 PM (PST) on Monday, November 17, 2025.
The magnitude 1.7 event occurred 4 km (2 miles) SE of San Ramon, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Monday, November 17, 2025 at 10:56:59 PM (PST)
Tuesday, November 18, 2025 at 6:56:59 (UTC)
Distance from San Ramon, CA - 4 km (2 miles) SE (136 degrees)
Dublin, CA - 6 km (4 miles) N (351 degrees)
Blackhawk, CA - 8 km (5 miles) SSW (205 degrees)
Diablo, CA - 9 km (6 miles) S (174 degrees)
Danville, CA - 9 km (6 miles) SSE (148 degrees)
Coordinates 37 deg. 45.2 min. N (37.754N), 121 deg. 56.8 min. W (121.947W)
Depth 7.75 km (4.80 miles)
Quality Good
Location Quality Parameters Nst=10, Nph=10, Dmin=10.6 km, Rmss=0.05 sec, Erho=0.31 km, Erzz=0.74000001 km, Gp=92 degrees
Event ID# nc75265021
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