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 9:59:58 AM (PDT) on Saturday, October 25, 2025.
The magnitude 0.9 event occurred 7 km (4 miles) SE of The Geysers, CA.
The hypocentral depth is -1 km (-0.50 miles).


Magnitude 0.9 - duration magnitude (Md)
Time Saturday, October 25, 2025 at 9:59:58 AM (PDT)
Saturday, October 25, 2025 at 16:59:58 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) SE (136 degrees)
Middletown, CA - 8 km (5 miles) WSW (256 degrees)
Cobb, CA - 10 km (6 miles) S (170 degrees)
Hidden Valley Lake, CA - 15 km (9 miles) WSW (237 degrees)
Healdsburg, CA - 20 km (12 miles) NE (46 degrees)
Coordinates 38 deg. 44.1 min. N (38.735N), 122 deg. 42.3 min. W (122.704W)
Depth -0.73 km (-0.50 miles)
Quality Fair
Location Quality Parameters Nst=9, Nph=9, Dmin=3.5 km, Rmss=0.16 sec, Erho=0.82 km, Erzz=2.22000003 km, Gp=154 degrees
Event ID# nc75254486
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