Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 7:49:22 PM (PST) on Friday, December 19, 2025.
The magnitude 2.3 event occurred 5 km (3 miles) N of Dublin, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 2.3 - duration magnitude (Md) |
| Time | Friday, December 19, 2025 at 7:49:22 PM (PST) Saturday, December 20, 2025 at 3:49:22 (UTC) |
| Distance from |
Dublin, CA - 5 km (3 miles) N (353 degrees) San Ramon, CA - 5 km (3 miles) SE (138 degrees) Blackhawk, CA - 9 km (5 miles) SSW (201 degrees) Diablo, CA - 10 km (6 miles) S (172 degrees) Danville, CA - 10 km (6 miles) SSE (148 degrees) |
| Coordinates | 37 deg. 45.0 min. N (37.749N), 121 deg. 56.6 min. W (121.943W) |
| Depth | 9.53 km (5.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=152, Nph=157, Dmin=4.3 km, Rmss=0.15 sec, Erho=0.1 km, Erzz=0.2 km, Gp=24 degrees |
| Event ID# | nc75283011 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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