Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:23:25 AM (PDT) on Tuesday, August 5, 2025.
The magnitude 1.1 event occurred 2 km (1 miles) SW of Dublin, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.1 - duration magnitude (Md)
Time Tuesday, August 5, 2025 at 5:23:25 AM (PDT)
Tuesday, August 5, 2025 at 12:23:25 (UTC)
Distance from Dublin, CA - 2 km (1 miles) SW (220 degrees)
Pleasanton, CA - 7 km (5 miles) WNW (294 degrees)
Fairview, CA - 9 km (5 miles) E (82 degrees)
San Ramon, CA - 10 km (6 miles) SSE (166 degrees)
Castro Valley, CA - 12 km (7 miles) E (93 degrees)
Coordinates 37 deg. 41.3 min. N (37.689N), 121 deg. 57.0 min. W (121.950W)
Depth 9.33 km (5.80 miles)
Quality Excellent
Location Quality Parameters Nst=15, Nph=18, Dmin=2.7 km, Rmss=0.06 sec, Erho=0.28 km, Erzz=0.47 km, Gp=55 degrees
Event ID# nc75219517
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