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 1:34:36 AM (PDT) on Monday, July 21, 2025.
The magnitude 1.0 event occurred 2 km (1 miles) W of Orinda, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Monday, July 21, 2025 at 1:34:36 AM (PDT)
Monday, July 21, 2025 at 8:34:36 (UTC)
Distance from Orinda, CA - 2 km (1 miles) W (280 degrees)
Berkeley, CA - 6 km (4 miles) E (81 degrees)
Piedmont, CA - 7 km (4 miles) NNE (21 degrees)
Kensington, CA - 7 km (5 miles) ESE (116 degrees)
Albany, CA - 8 km (5 miles) E (95 degrees)
Coordinates 37 deg. 52.8 min. N (37.881N), 122 deg. 12.3 min. W (122.204W)
Depth 6.67 km (4.10 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=9, Dmin=2.3 km, Rmss=0.02 sec, Erho=0.34 km, Erzz=0.560000002 km, Gp=96 degrees
Event ID# nc75212832
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