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 10:59:06 PM (PST) on Wednesday, December 31, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) N of Dublin, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Wednesday, December 31, 2025 at 10:59:06 PM (PST) Thursday, January 1, 2026 at 6:59:06 (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) Danville, CA - 9 km (6 miles) SSE (147 degrees) Diablo, CA - 10 km (6 miles) S (172 degrees) |
| Coordinates | 37 deg. 45.0 min. N (37.750N), 121 deg. 56.5 min. W (121.942W) |
| Depth | 8.52 km (5.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=14, Nph=14, Dmin=10.9 km, Rmss=0.03 sec, Erho=0.2 km, Erzz=0.569999993 km, Gp=61 degrees |
| Event ID# | nc75289581 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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