Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A light earthquake occurred at 7:56:09 PM (PST) on Friday, December 19, 2025.
The magnitude 4.0 event occurred 5 km (3 miles) NNW of Dublin, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 4.0 - moment magnitude (Mw) |
| Time | Friday, December 19, 2025 at 7:56:09 PM (PST) Saturday, December 20, 2025 at 3:56:09 (UTC) |
| Distance from |
Dublin, CA - 5 km (3 miles) NNW (342 degrees) San Ramon, CA - 5 km (3 miles) SSE (152 degrees) Blackhawk, CA - 9 km (6 miles) SSW (205 degrees) Diablo, CA - 10 km (6 miles) S (178 degrees) Danville, CA - 10 km (6 miles) SSE (155 degrees) |
| Coordinates | 37 deg. 44.6 min. N (37.744N), 121 deg. 57.2 min. W (121.953W) |
| Depth | 9.63 km (6.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=195, Nph=228, Dmin=4.2 km, Rmss=0.22 sec, Erho=0.12 km, Erzz=0.26 km, Gp=14 degrees |
| Event ID# | nc75283031 |
| 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)
