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 3:00:50 PM (PST) on Monday, December 22, 2025.
The magnitude 2.2 event occurred 5 km (3 miles) N of Dublin, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Monday, December 22, 2025 at 3:00:50 PM (PST) Monday, December 22, 2025 at 23:00:50 (UTC) |
| Distance from |
Dublin, CA - 5 km (3 miles) N (354 degrees) San Ramon, CA - 5 km (3 miles) SE (136 degrees) Blackhawk, CA - 8 km (5 miles) SSW (201 degrees) Diablo, CA - 9 km (6 miles) S (171 degrees) Danville, CA - 9 km (6 miles) SSE (147 degrees) |
| Coordinates | 37 deg. 45.0 min. N (37.751N), 121 deg. 56.5 min. W (121.942W) |
| Depth | 9.00 km (5.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=22, Nph=21, Dmin=10.9 km, Rmss=0.06 sec, Erho=0.23 km, Erzz=0.49000001 km, Gp=57 degrees |
| Event ID# | nc75284981 |
| 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)
