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 1:01:58 PM (PDT) on Monday, September 22, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) ESE of The Geysers, CA.
The hypocentral depth is -0.21 km (-0.10 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Monday, September 22, 2025 at 1:01:58 PM (PDT)
Monday, September 22, 2025 at 20:01:58 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) ESE (115 degrees)
Cobb, CA - 6 km (4 miles) S (183 degrees)
Middletown, CA - 10 km (6 miles) W (279 degrees)
Hidden Valley Lake, CA - 15 km (10 miles) WSW (253 degrees)
Lower Lake, CA - 19 km (12 miles) SSW (212 degrees)
Coordinates 38 deg. 46.0 min. N (38.767N), 122 deg. 43.6 min. W (122.727W)
Depth -0.21 km (-0.10 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=9, Dmin=0.6 km, Rmss=0.02 sec, Erho=0.76 km, Erzz=1.04999995 km, Gp=122 degrees
Event ID# nc75240622
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