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 1:54:56 PM (PST) on Friday, December 26, 2025.
The magnitude 1.4 event occurred 5 km (3 miles) SE of Portola Valley, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Friday, December 26, 2025 at 1:54:56 PM (PST) Friday, December 26, 2025 at 21:54:56 (UTC) |
| Distance from |
Portola Valley, CA - 5 km (3 miles) SE (145 degrees) Los Altos Hills, CA - 7 km (4 miles) WSW (241 degrees) West Menlo Park, CA - 9 km (6 miles) S (181 degrees) Stanford, CA - 9 km (6 miles) SSW (203 degrees) Loyola, CA - 9 km (6 miles) W (269 degrees) |
| Coordinates | 37 deg. 21.0 min. N (37.350N), 122 deg. 12.3 min. W (122.205W) |
| Depth | 6.35 km (3.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=1.8 km, Rmss=0.02 sec, Erho=1.43 km, Erzz=0.389999986 km, Gp=134 degrees |
| Event ID# | nc75286786 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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