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 5:28:01 PM (PDT) on Thursday, September 25, 2025.
The magnitude 1.2 event occurred 10 km (6 miles) WSW of Upper Lake, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Thursday, September 25, 2025 at 5:28:01 PM (PDT)
Friday, September 26, 2025 at 0:28:01 (UTC)
Distance from Upper Lake, CA - 10 km (6 miles) WSW (248 degrees)
North Lakeport, CA - 11 km (7 miles) WNW (296 degrees)
Talmage, CA - 13 km (8 miles) E (91 degrees)
Lakeport, CA - 13 km (8 miles) NW (318 degrees)
Nice, CA - 15 km (9 miles) W (273 degrees)
Coordinates 39 deg. 7.8 min. N (39.131N), 123 deg. 1.1 min. W (123.018W)
Depth 5.94 km (3.70 miles)
Quality Excellent
Location Quality Parameters Nst=7, Nph=7, Dmin=5.1 km, Rmss=0.09 sec, Erho=0.44 km, Erzz=1.23000002 km, Gp=89 degrees
Event ID# nc75242107
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For more information, see https://earthquake.usgs.gov

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