Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 3:19:31 PM (PDT) on Thursday, October 23, 2025.
The magnitude 1.0 event occurred 1 km (1 miles) E (83 degrees) of Woodside, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 3:19:31 PM (PDT) Thursday, October 23, 2025 at 22:19:31 (UTC) |
| Distance from |
Woodside, CA - 1 km (1 miles) E (83 degrees) West Menlo Park, CA - 3 km (2 miles) W (266 degrees) Portola Valley, CA - 5 km (3 miles) N (357 degrees) Emerald Lake Hills, CA - 5 km (3 miles) SE (145 degrees) Atherton, CA - 5 km (3 miles) SW (227 degrees) |
| Coordinates | 37 deg. 25.9 min. N (37.431N), 122 deg. 14.3 min. W (122.238W) |
| Depth | 4.63 km (2.90 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=15, Nph=18, Dmin=3.1 km, Rmss=0.09 sec, Erho=0.23 km, Erzz=0.3 km, Gp=72 degrees |
| Event ID# | nc75253561 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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