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 3:34:47 PM (PDT) on Thursday, October 23, 2025.
The magnitude 2.2 event occurred 1 km (1 miles) E (86 degrees) of Woodside, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 3:34:47 PM (PDT) Thursday, October 23, 2025 at 22:34:47 (UTC) |
| Distance from |
Woodside, CA - 1 km (1 miles) E (86 degrees) West Menlo Park, CA - 3 km (2 miles) W (265 degrees) Emerald Lake Hills, CA - 4 km (3 miles) SSE (148 degrees) Portola Valley, CA - 5 km (3 miles) N (354 degrees) Atherton, CA - 5 km (3 miles) SW (229 degrees) |
| Coordinates | 37 deg. 25.8 min. N (37.431N), 122 deg. 14.5 min. W (122.242W) |
| Depth | 4.06 km (2.50 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=31, Nph=29, Dmin=3.0 km, Rmss=0.07 sec, Erho=0.19 km, Erzz=0.300000012 km, Gp=84 degrees |
| Event ID# | nc75253581 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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