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 3:22:44 PM (PST) on Tuesday, December 23, 2025.
The magnitude 0.8 event occurred 6 km (4 miles) WNW of Cobb, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 0.8 - duration magnitude (Md) |
| Time | Tuesday, December 23, 2025 at 3:22:44 PM (PST) Tuesday, December 23, 2025 at 23:22:44 (UTC) |
| Distance from |
Cobb, CA - 6 km (4 miles) WNW (290 degrees) The Geysers, CA - 7 km (5 miles) NNW (341 degrees) Kelseyville, CA - 16 km (10 miles) SSE (163 degrees) Lower Lake, CA - 17 km (11 miles) WSW (243 degrees) Middletown, CA - 18 km (11 miles) NW (304 degrees) |
| Coordinates | 38 deg. 50.4 min. N (38.840N), 122 deg. 47.1 min. W (122.785W) |
| Depth | 0.99 km (0.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=0.5 km, Rmss=0.01 sec, Erho=0.41 km, Erzz=0.850000024 km, Gp=100 degrees |
| Event ID# | nc75285451 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
[
Index map ||
Big earthquake list ||
All earthquake list ||
Glossary of terms ||
Top page
]
[
Did you feel it? ||
ShakeMaps
|| Relative2Me
]
[ Data Sources ]
Special maps
Long Valley || Los Angeles || San Francisco
Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)
