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 event has been reviewed by a seismologist.
A micro earthquake occurred at 2:55:44 PM (PST) on Monday, December 8, 2025.
The magnitude 2.9 event occurred 2 km (1 miles) E (95 degrees) of Piedmont, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 2.9 - local magnitude (Ml) |
| Time | Monday, December 8, 2025 at 2:55:44 PM (PST) Monday, December 8, 2025 at 22:55:44 (UTC) |
| Distance from |
Piedmont, CA - 2 km (1 miles) E (95 degrees) Oakland, CA - 3 km (2 miles) NNE (24 degrees) Emeryville, CA - 6 km (4 miles) E (98 degrees) Alameda, CA - 7 km (4 miles) NNE (22 degrees) Orinda, CA - 7 km (4 miles) SSW (205 degrees) |
| Coordinates | 37 deg. 49.4 min. N (37.823N), 122 deg. 12.7 min. W (122.212W) |
| Depth | 4.56 km (2.80 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=113, Nph=122, Dmin=5.4 km, Rmss=0.33 sec, Erho=0.68 km, Erzz=0.817 km, Gp=32 degrees |
| Event ID# | nc75276931 |
| 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)
