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 4:44:06 AM (PST) on Sunday, November 9, 2025.
The magnitude 1.4 event occurred 5 km (3 miles) SSE of Portola Valley, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Sunday, November 9, 2025 at 4:44:06 AM (PST) Sunday, November 9, 2025 at 12:44:06 (UTC) |
| Distance from |
Portola Valley, CA - 5 km (3 miles) SSE (156 degrees) Los Altos Hills, CA - 8 km (5 miles) SW (235 degrees) West Menlo Park, CA - 10 km (6 miles) S (184 degrees) Stanford, CA - 10 km (6 miles) SSW (203 degrees) Loyola, CA - 10 km (6 miles) W (262 degrees) |
| Coordinates | 37 deg. 20.4 min. N (37.340N), 122 deg. 12.6 min. W (122.210W) |
| Depth | 7.66 km (4.80 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=2.9 km, Rmss=0.05 sec, Erho=0.64 km, Erzz=1.25 km, Gp=77 degrees |
| Event ID# | nc75260836 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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