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 9:56:30 PM (PST) on Saturday, December 27, 2025.
The magnitude 1.1 event occurred 7 km (5 miles) WNW of Cobb, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Saturday, December 27, 2025 at 9:56:30 PM (PST) Sunday, December 28, 2025 at 5:56:30 (UTC) |
| Distance from |
Cobb, CA - 7 km (5 miles) WNW (288 degrees) The Geysers, CA - 8 km (5 miles) NNW (331 degrees) Kelseyville, CA - 15 km (10 miles) SSE (168 degrees) Soda Bay, CA - 18 km (11 miles) S (184 degrees) Lower Lake, CA - 18 km (11 miles) WSW (246 degrees) |
| Coordinates | 38 deg. 50.6 min. N (38.843N), 122 deg. 48.2 min. W (122.804W) |
| Depth | 3.94 km (2.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=1.2 km, Rmss=0.04 sec, Erho=1.01 km, Erzz=1.05999994 km, Gp=177 degrees |
| Event ID# | nc75287401 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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