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 5:02:42 PM (PDT) on Thursday, October 23, 2025.
The magnitude 1.6 event occurred 1 km (0 miles) ESE of Woodside, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 5:02:42 PM (PDT) Friday, October 24, 2025 at 0:02:42 (UTC) |
| Distance from |
Woodside, CA - 1 km (0 miles) ESE (114 degrees) West Menlo Park, CA - 4 km (2 miles) W (260 degrees) Portola Valley, CA - 5 km (3 miles) NNW (348 degrees) Emerald Lake Hills, CA - 5 km (3 miles) SSE (156 degrees) Redwood City, CA - 6 km (4 miles) S (188 degrees) |
| Coordinates | 37 deg. 25.7 min. N (37.428N), 122 deg. 14.8 min. W (122.247W) |
| Depth | 3.89 km (2.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=17, Nph=17, Dmin=2.7 km, Rmss=0.07 sec, Erho=0.34 km, Erzz=0.370000005 km, Gp=129 degrees |
| Event ID# | nc75253666 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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