Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #10: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 7:49:28 PM (PST) on Friday, December 19, 2025.
The magnitude 3.8 event occurred 5 km (3 miles) NNW of Dublin, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 3.8 - moment magnitude (Mw) |
| Time | Friday, December 19, 2025 at 7:49:28 PM (PST) Saturday, December 20, 2025 at 3:49:28 (UTC) |
| Distance from |
Dublin, CA - 5 km (3 miles) NNW (341 degrees) San Ramon, CA - 5 km (3 miles) SSE (153 degrees) Diablo, CA - 10 km (6 miles) S (178 degrees) Danville, CA - 10 km (6 miles) SSE (155 degrees) Blackhawk, CA - 10 km (6 miles) SSW (205 degrees) |
| Coordinates | 37 deg. 44.6 min. N (37.743N), 121 deg. 57.2 min. W (121.954W) |
| Depth | 9.56 km (5.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=189, Nph=207, Dmin=4.2 km, Rmss=0.20 sec, Erho=0.11 km, Erzz=0.23 km, Gp=24 degrees |
| Event ID# | nc75283016 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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