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 8:04:11 PM (PST) on Friday, December 19, 2025.
The magnitude 1.8 event occurred 5 km (3 miles) N of Dublin, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Friday, December 19, 2025 at 8:04:11 PM (PST) Saturday, December 20, 2025 at 4:04:11 (UTC) |
| Distance from |
Dublin, CA - 5 km (3 miles) N (357 degrees) San Ramon, CA - 5 km (3 miles) SE (133 degrees) Blackhawk, CA - 8 km (5 miles) SSW (200 degrees) Diablo, CA - 9 km (6 miles) S (170 degrees) Danville, CA - 9 km (6 miles) SE (145 degrees) |
| Coordinates | 37 deg. 45.1 min. N (37.751N), 121 deg. 56.3 min. W (121.939W) |
| Depth | 6.84 km (4.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=11.2 km, Rmss=0.09 sec, Erho=0.53 km, Erzz=1.25 km, Gp=113 degrees |
| Event ID# | nc75283051 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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