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 11:20:54 PM (PDT) on Monday, September 7, 2026.
The magnitude 1.3 event occurred 15 km (10 miles) S of Portola Valley, CA.
The hypocentral depth is -0.16 km (-0.10 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Monday, September 7, 2026 at 11:20:54 PM (PDT) Tuesday, September 8, 2026 at 6:20:54 (UTC) |
| Distance from |
Portola Valley, CA - 15 km (10 miles) S (169 degrees) Boulder Creek, CA - 15 km (9 miles) NNW (333 degrees) Loyola, CA - 15 km (9 miles) SW (218 degrees) Los Altos Hills, CA - 16 km (10 miles) SSW (201 degrees) Saratoga, CA - 16 km (10 miles) W (263 degrees) |
| Coordinates | 37 deg. 14.9 min. N (37.248N), 122 deg. 12.1 min. W (122.201W) |
| Depth | -0.16 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=4.1 km, Rmss=0.08 sec, Erho=0.71 km, Erzz=1.47000003 km, Gp=114 degrees |
| Event ID# | nc75431592 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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