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 2:30:28 AM (PDT) on Tuesday, August 18, 2026.
The magnitude 2.0 event occurred 3 km (2 miles) ENE (66 degrees) of Portola Valley, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 2.0 - duration magnitude (Md) |
| Time | Tuesday, August 18, 2026 at 2:30:28 AM (PDT) Tuesday, August 18, 2026 at 9:30:28 (UTC) |
| Distance from |
Portola Valley, CA - 3 km (2 miles) ENE (66 degrees) West Menlo Park, CA - 4 km (3 miles) S (178 degrees) Stanford, CA - 4 km (3 miles) SW (225 degrees) Woodside, CA - 6 km (4 miles) SE (129 degrees) Los Altos Hills, CA - 6 km (4 miles) WNW (288 degrees) |
| Coordinates | 37 deg. 23.8 min. N (37.396N), 122 deg. 12.1 min. W (122.201W) |
| Depth | 5.83 km (3.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=20, Nph=20, Dmin=3.6 km, Rmss=0.11 sec, Erho=0.31 km, Erzz=0.959999979 km, Gp=115 degrees |
| Event ID# | nc75420527 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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