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 1:23:08 AM (PDT) on Monday, October 13, 2025.
The magnitude 1.6 event occurred 7 km (4 miles) ESE of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).


Magnitude 1.6 - duration magnitude (Md)
Time Monday, October 13, 2025 at 1:23:08 AM (PDT)
Monday, October 13, 2025 at 8:23:08 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) ESE (122 degrees)
Middletown, CA - 7 km (4 miles) W (263 degrees)
Cobb, CA - 9 km (6 miles) SSE (162 degrees)
Hidden Valley Lake, CA - 13 km (8 miles) WSW (239 degrees)
Lower Lake, CA - 20 km (12 miles) SSW (201 degrees)
Coordinates 38 deg. 44.7 min. N (38.745N), 122 deg. 41.4 min. W (122.690W)
Depth 1.33 km (0.80 miles)
Quality Good
Location Quality Parameters Nst=10, Nph=10, Dmin=2.6 km, Rmss=0.03 sec, Erho=0.28 km, Erzz=0.660000026 km, Gp=91 degrees
Event ID# nc75248576
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