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 11:09:36 PM (PST) on Tuesday, December 30, 2025.
The magnitude 0.8 event occurred 7 km (4 miles) W of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 0.8 - duration magnitude (Md) |
| Time | Tuesday, December 30, 2025 at 11:09:36 PM (PST) Wednesday, December 31, 2025 at 7:09:36 (UTC) |
| Distance from |
Cobb, CA - 7 km (4 miles) W (280 degrees) The Geysers, CA - 7 km (5 miles) NNW (327 degrees) Kelseyville, CA - 16 km (10 miles) S (169 degrees) Cloverdale, CA - 19 km (12 miles) E (80 degrees) Soda Bay, CA - 19 km (12 miles) S (184 degrees) |
| Coordinates | 38 deg. 50.0 min. N (38.833N), 122 deg. 48.2 min. W (122.804W) |
| Depth | 2.09 km (1.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=1.2 km, Rmss=0.01 sec, Erho=0.44 km, Erzz=1.24000001 km, Gp=99 degrees |
| Event ID# | nc75288896 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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