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 10:39:22 PM (PDT) on Monday, September 29, 2025.
The magnitude 1.2 event occurred 7 km (4 miles) NW of The Geysers, CA.
The hypocentral depth is 21 km (13 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Monday, September 29, 2025 at 10:39:22 PM (PDT)
Tuesday, September 30, 2025 at 5:39:22 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) NW (325 degrees)
Cobb, CA - 7 km (4 miles) W (276 degrees)
Kelseyville, CA - 17 km (11 miles) S (169 degrees)
Middletown, CA - 18 km (11 miles) WNW (298 degrees)
Cloverdale, CA - 19 km (12 miles) E (82 degrees)
Coordinates 38 deg. 49.7 min. N (38.828N), 122 deg. 48.1 min. W (122.801W)
Depth 20.89 km (13.00 miles)
Quality Poor
Location Quality Parameters Nst=6, Nph=6, Dmin=0.9 km, Rmss=0.06 sec, Erho=3.9 km, Erzz=9.63000011 km, Gp=208 degrees
Event ID# nc75242781
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