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 1:26:58 PM (PST) on Monday, December 29, 2025.
The magnitude 0.4 event occurred 3 km (2 miles) WSW of Cobb, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 0.4 - duration magnitude (Md) |
| Time | Monday, December 29, 2025 at 1:26:58 PM (PST) Monday, December 29, 2025 at 21:26:58 (UTC) |
| Distance from |
Cobb, CA - 3 km (2 miles) WSW (256 degrees) The Geysers, CA - 4 km (3 miles) N (4 degrees) Middletown, CA - 14 km (9 miles) WNW (301 degrees) Lower Lake, CA - 16 km (10 miles) SW (230 degrees) Hidden Valley Lake, CA - 17 km (10 miles) W (273 degrees) |
| Coordinates | 38 deg. 49.0 min. N (38.817N), 122 deg. 45.2 min. W (122.753W) |
| Depth | 2.61 km (1.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=1.9 km, Rmss=0.08 sec, Erho=0.67 km, Erzz=0.920000017 km, Gp=166 degrees |
| Event ID# | nc75288236 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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