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 4:06:39 AM (PST) on Monday, December 15, 2025.
The magnitude 0.6 event occurred 9 km (6 miles) WNW of Cobb, CA.
The hypocentral depth is 1 km (0.40 miles).
| Magnitude | 0.6 - duration magnitude (Md) |
| Time | Monday, December 15, 2025 at 4:06:39 AM (PST) Monday, December 15, 2025 at 12:06:39 (UTC) |
| Distance from |
Cobb, CA - 9 km (6 miles) WNW (295 degrees) The Geysers, CA - 11 km (7 miles) NNW (328 degrees) Kelseyville, CA - 13 km (8 miles) S (173 degrees) Soda Bay, CA - 16 km (10 miles) S (190 degrees) Cloverdale, CA - 18 km (11 miles) ENE (71 degrees) |
| Coordinates | 38 deg. 51.5 min. N (38.858N), 122 deg. 49.3 min. W (122.822W) |
| Depth | 0.72 km (0.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=0.4 km, Rmss=0.02 sec, Erho=0.32 km, Erzz=0.649999976 km, Gp=160 degrees |
| Event ID# | nc75280286 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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