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 1:30:49 PM (PDT) on Saturday, August 30, 2025.
The magnitude 1.3 event occurred 11 km (7 miles) SE of Pleasanton, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.3 - duration magnitude (Md)
Time Saturday, August 30, 2025 at 1:30:49 PM (PDT)
Saturday, August 30, 2025 at 20:30:49 (UTC)
Distance from Pleasanton, CA - 11 km (7 miles) SE (146 degrees)
Livermore, CA - 12 km (7 miles) SSW (197 degrees)
Fremont, CA - 16 km (10 miles) ENE (74 degrees)
Dublin, CA - 18 km (11 miles) SE (140 degrees)
Union City, CA - 19 km (12 miles) E (95 degrees)
Coordinates 37 deg. 34.9 min. N (37.582N), 121 deg. 48.4 min. W (121.807W)
Depth 5.58 km (3.50 miles)
Quality Good
Location Quality Parameters Nst=12, Nph=11, Dmin=5.3 km, Rmss=0.06 sec, Erho=0.25 km, Erzz=0.540000021 km, Gp=92 degrees
Event ID# nc75230952
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