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 6:14:06 AM (PDT) on Sunday, September 21, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) WSW of Yountville, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Sunday, September 21, 2025 at 6:14:06 AM (PDT)
Sunday, September 21, 2025 at 13:14:06 (UTC)
Distance from Yountville, CA - 5 km (3 miles) WSW (247 degrees)
Eldridge, CA - 9 km (6 miles) ENE (65 degrees)
Fetters Hot Springs-Agua Caliente, CA - 9 km (6 miles) NE (42 degrees)
Boyes Hot Springs, CA - 10 km (6 miles) NE (36 degrees)
Sonoma, CA - 11 km (7 miles) NNE (20 degrees)
Coordinates 38 deg. 23.0 min. N (38.383N), 122 deg. 25.0 min. W (122.416W)
Depth 9.20 km (5.70 miles)
Quality Excellent
Location Quality Parameters Nst=30, Nph=30, Dmin=4.0 km, Rmss=0.12 sec, Erho=0.32 km, Erzz=0.660000026 km, Gp=81 degrees
Event ID# nc75240227
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