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 10:35:05 PM (PST) on Monday, December 8, 2025.
The magnitude 0.8 event occurred 5 km (3 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 0.8 - duration magnitude (Md) |
| Time | Monday, December 8, 2025 at 10:35:05 PM (PST) Tuesday, December 9, 2025 at 6:35:05 (UTC) |
| Distance from |
Cobb, CA - 5 km (3 miles) WNW (288 degrees) The Geysers, CA - 7 km (4 miles) NNW (342 degrees) Kelseyville, CA - 16 km (10 miles) SSE (162 degrees) Lower Lake, CA - 17 km (10 miles) WSW (241 degrees) Middletown, CA - 17 km (11 miles) WNW (303 degrees) |
| Coordinates | 38 deg. 50.2 min. N (38.837N), 122 deg. 46.8 min. W (122.781W) |
| Depth | 1.64 km (1.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=0.7 km, Rmss=0.03 sec, Erho=0.33 km, Erzz=0.49000001 km, Gp=91 degrees |
| Event ID# | nc75277151 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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