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 9:51:53 PM (PST) on Wednesday, November 19, 2025.
The magnitude 1.8 event occurred 4 km (3 miles) ESE of San Ramon, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Wednesday, November 19, 2025 at 9:51:53 PM (PST)
Thursday, November 20, 2025 at 5:51:53 (UTC)
Distance from San Ramon, CA - 4 km (3 miles) ESE (107 degrees)
Blackhawk, CA - 6 km (4 miles) SSW (201 degrees)
Dublin, CA - 7 km (5 miles) N (2 degrees)
Danville, CA - 8 km (5 miles) SE (135 degrees)
Diablo, CA - 8 km (5 miles) SSE (163 degrees)
Coordinates 37 deg. 46.2 min. N (37.769N), 121 deg. 56.0 min. W (121.933W)
Depth 6.13 km (3.80 miles)
Quality Good
Location Quality Parameters Nst=12, Nph=11, Dmin=1.9 km, Rmss=0.17 sec, Erho=0.61 km, Erzz=1.07000005 km, Gp=102 degrees
Event ID# nc75266371
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