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 1:37:38 PM (PDT) on Friday, August 22, 2025.
The magnitude 0.4 event occurred 8 km (5 miles) NW of Cobb, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 0.4 - duration magnitude (Md) |
| Time | Friday, August 22, 2025 at 1:37:38 PM (PDT) Friday, August 22, 2025 at 20:37:38 (UTC) |
| Distance from |
Cobb, CA - 8 km (5 miles) NW (306 degrees) The Geysers, CA - 10 km (6 miles) NNW (339 degrees) Kelseyville, CA - 13 km (8 miles) SSE (164 degrees) Soda Bay, CA - 15 km (9 miles) S (183 degrees) Lower Lake, CA - 17 km (11 miles) WSW (253 degrees) |
| Coordinates | 38 deg. 51.8 min. N (38.864N), 122 deg. 47.9 min. W (122.798W) |
| Depth | 8.81 km (5.50 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=2.4 km, Rmss=0.14 sec, Erho=2.91 km, Erzz=1.02999997 km, Gp=228 degrees |
| Event ID# | nc75227312 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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