Recent Earthquakes in California and Nevada

== PRELIMINARY EARTHQUAKE REPORT ==

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

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Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:10:16 PM (PDT) on Sunday, August 3, 2025.
The magnitude 0.5 event occurred 6 km (4 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 2 miles).

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Magnitude	0.5 - duration magnitude (Md)
Time	Sunday, August 3, 2025 at 5:10:16 PM (PDT) Monday, August 4, 2025 at 0:10:16 (UTC)
Distance from	Cobb, CA - 6 km (4 miles) WNW (285 degrees) The Geysers, CA - 7 km (4 miles) NNW (336 degrees) Kelseyville, CA - 16 km (10 miles) SSE (165 degrees) Soda Bay, CA - 18 km (11 miles) S (180 degrees) Middletown, CA - 18 km (11 miles) WNW (302 degrees)
Coordinates	38 deg. 50.2 min. N (38.836N), 122 deg. 47.4 min. W (122.790W)
Depth	2.45 km (1.50 miles)
Quality	Excellent
Location Quality Parameters	Nst=28, Nph=31, Dmin=0.3 km, Rmss=0.02 sec, Erho=0.23 km, Erzz=0.4 km, Gp=68 degrees
Event ID#	nc75218752
Additional Information	Map

For more information, see https://earthquake.usgs.gov

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