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 7:25:05 PM (PST) on Friday, December 26, 2025.
The magnitude 1.8 event occurred 6 km (4 miles) E (98 degrees) of Walnut Creek, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Friday, December 26, 2025 at 7:25:05 PM (PST) Saturday, December 27, 2025 at 3:25:05 (UTC) |
| Distance from |
Walnut Creek, CA - 6 km (4 miles) E (98 degrees) Waldon, CA - 6 km (4 miles) ESE (122 degrees) Alamo, CA - 6 km (4 miles) NNE (28 degrees) Saranap, CA - 7 km (4 miles) ENE (77 degrees) Clayton, CA - 7 km (5 miles) SW (230 degrees) |
| Coordinates | 37 deg. 53.9 min. N (37.899N), 121 deg. 59.9 min. W (121.999W) |
| Depth | 9.73 km (6.00 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=22, Nph=21, Dmin=4.5 km, Rmss=0.07 sec, Erho=0.26 km, Erzz=0.569999993 km, Gp=68 degrees |
| Event ID# | nc75286941 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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