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 6:26:55 PM (PDT) on Monday, August 11, 2025.
The magnitude 1.9 event occurred 9 km (6 miles) SSE of Pleasanton, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.9 - duration magnitude (Md)
Time Monday, August 11, 2025 at 6:26:55 PM (PDT)
Tuesday, August 12, 2025 at 1:26:55 (UTC)
Distance from Pleasanton, CA - 9 km (6 miles) SSE (165 degrees)
Fremont, CA - 13 km (8 miles) ENE (70 degrees)
Livermore, CA - 13 km (8 miles) SSW (212 degrees)
Dublin, CA - 15 km (10 miles) SSE (150 degrees)
Union City, CA - 15 km (9 miles) E (96 degrees)
Coordinates 37 deg. 34.9 min. N (37.582N), 121 deg. 50.9 min. W (121.848W)
Depth 7.68 km (4.80 miles)
Quality Good
Location Quality Parameters Nst=27, Nph=24, Dmin=4.8 km, Rmss=0.18 sec, Erho=0.3 km, Erzz=0.449999988 km, Gp=47 degrees
Event ID# nc75222052
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