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 4:03:54 PM (PDT) on Saturday, August 23, 2025.
The magnitude 0.4 event occurred 5 km (3 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 0.4 - duration magnitude (Md) |
| Time | Saturday, August 23, 2025 at 4:03:54 PM (PDT) Saturday, August 23, 2025 at 23:03:54 (UTC) |
| Distance from |
Cobb, CA - 5 km (3 miles) WNW (293 degrees) The Geysers, CA - 7 km (4 miles) NNW (346 degrees) Kelseyville, CA - 16 km (10 miles) SSE (161 degrees) Lower Lake, CA - 16 km (10 miles) WSW (241 degrees) Middletown, CA - 17 km (11 miles) NW (305 degrees) |
| Coordinates | 38 deg. 50.4 min. N (38.840N), 122 deg. 46.6 min. W (122.777W) |
| Depth | 2.28 km (1.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=0.3 km, Rmss=0.01 sec, Erho=1.6 km, Erzz=2.77999997 km, Gp=138 degrees |
| Event ID# | nc75227862 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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