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 10:45:46 AM (PDT) on Tuesday, September 9, 2025.
The magnitude 0.8 event occurred 2 km (1 miles) N of The Geysers, CA.
The hypocentral depth is -0.11 km (-0.10 miles).


Magnitude 0.8 - duration magnitude (Md)
Time Tuesday, September 9, 2025 at 10:45:46 AM (PDT)
Tuesday, September 9, 2025 at 17:45:46 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) N (358 degrees)
Cobb, CA - 4 km (3 miles) SW (222 degrees)
Middletown, CA - 13 km (8 miles) WNW (290 degrees)
Hidden Valley Lake, CA - 17 km (11 miles) W (264 degrees)
Lower Lake, CA - 18 km (11 miles) SW (224 degrees)
Coordinates 38 deg. 47.6 min. N (38.793N), 122 deg. 45.4 min. W (122.757W)
Depth -0.11 km (-0.10 miles)
Quality Good
Location Quality Parameters Nst=7, Nph=7, Dmin=0.9 km, Rmss=0.04 sec, Erho=0.36 km, Erzz=1.02999997 km, Gp=133 degrees
Event ID# nc75235622
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