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 1:47:26 AM (PST) on Tuesday, December 9, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) NW of Redwood Valley, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Tuesday, December 9, 2025 at 1:47:26 AM (PST) Tuesday, December 9, 2025 at 9:47:26 (UTC) |
| Distance from |
Redwood Valley, CA - 5 km (3 miles) NW (318 degrees) Willits, CA - 16 km (10 miles) SE (142 degrees) Ukiah, CA - 17 km (10 miles) N (351 degrees) Talmage, CA - 19 km (12 miles) NNW (341 degrees) Brooktrails, CA - 21 km (13 miles) SE (143 degrees) |
| Coordinates | 39 deg. 17.7 min. N (39.295N), 123 deg. 14.4 min. W (123.240W) |
| Depth | 2.62 km (1.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=18, Nph=18, Dmin=13.0 km, Rmss=0.07 sec, Erho=0.23 km, Erzz=9.31000042 km, Gp=50 degrees |
| Event ID# | nc75277241 |
| 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)
