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 7:30:29 AM (PST) on Wednesday, December 31, 2025.
The magnitude 1.0 event occurred 7 km (5 miles) W of Cobb, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Wednesday, December 31, 2025 at 7:30:29 AM (PST) Wednesday, December 31, 2025 at 15:30:29 (UTC) |
| Distance from |
Cobb, CA - 7 km (5 miles) W (278 degrees) The Geysers, CA - 8 km (5 miles) NW (323 degrees) Kelseyville, CA - 16 km (10 miles) S (171 degrees) Cloverdale, CA - 18 km (11 miles) E (81 degrees) Soda Bay, CA - 19 km (12 miles) S (185 degrees) |
| Coordinates | 38 deg. 49.9 min. N (38.832N), 122 deg. 48.5 min. W (122.808W) |
| Depth | 1.15 km (0.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=13, Nph=13, Dmin=0.9 km, Rmss=0.02 sec, Erho=0.26 km, Erzz=0.649999976 km, Gp=91 degrees |
| Event ID# | nc75289031 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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