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 event has been reviewed by a seismologist.

A micro earthquake occurred at 11:39:12 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 2.7 event occurred 7 km (4 miles) SSW of Yountville, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 2.7 - local magnitude (Ml)
Time Wednesday, August 20, 2025 at 11:39:12 PM (PDT)
Thursday, August 21, 2025 at 6:39:12 (UTC)
Distance from Yountville, CA - 7 km (4 miles) SSW (203 degrees)
Sonoma, CA - 8 km (5 miles) NE (44 degrees)
Boyes Hot Springs, CA - 9 km (5 miles) ENE (65 degrees)
Fetters Hot Springs-Agua Caliente, CA - 9 km (5 miles) ENE (71 degrees)
Eldridge, CA - 10 km (6 miles) E (91 degrees)
Coordinates 38 deg. 20.8 min. N (38.347N), 122 deg. 23.5 min. W (122.391W)
Depth 7.00 km (4.30 miles)
Quality Good
Location Quality Parameters Nst=44, Nph=44, Dmin=5.4 km, Rmss=0.44 sec, Erho=1.22 km, Erzz=1.92 km, Gp=24 degrees
Event ID# nc75226627
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For more information, see https://earthquake.usgs.gov

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