Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 2:50:25 AM (PDT) on Saturday, August 16, 2025.
The magnitude 1.7 event occurred 19 km (12 miles) NNE (31 degrees) of Upper Lake, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Saturday, August 16, 2025 at 2:50:25 AM (PDT)
Saturday, August 16, 2025 at 9:50:25 (UTC)
Distance from Upper Lake, CA - 19 km (12 miles) NNE (31 degrees)
Nice, CA - 21 km (13 miles) NNE (12 degrees)
North Lakeport, CA - 26 km (16 miles) NNE (20 degrees)
Lakeport, CA - 32 km (20 miles) NNE (19 degrees)
Clearlake Oaks, CA - 34 km (21 miles) NNW (341 degrees)
Coordinates 39 deg. 18.7 min. N (39.312N), 122 deg. 47.9 min. W (122.798W)
Depth 5.62 km (3.50 miles)
Quality Good
Location Quality Parameters Nst=26, Nph=28, Dmin=9.4 km, Rmss=0.13 sec, Erho=0.24 km, Erzz=0.8 km, Gp=47 degrees
Event ID# nc75224512
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For more information, see https://earthquake.usgs.gov

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