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 4:39:17 PM (PDT) on Friday, March 13, 2026.
The magnitude 1.4 event occurred 5 km (3 miles) WSW of Portola Valley, CA.
The hypocentral depth is 0.14 km (0.10 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Friday, March 13, 2026 at 4:39:17 PM (PDT) Friday, March 13, 2026 at 23:39:17 (UTC) |
| Distance from |
Portola Valley, CA - 5 km (3 miles) WSW (243 degrees) Woodside, CA - 8 km (5 miles) SSW (201 degrees) Emerald Lake Hills, CA - 11 km (7 miles) S (188 degrees) West Menlo Park, CA - 11 km (7 miles) SW (223 degrees) Atherton, CA - 13 km (8 miles) SW (216 degrees) |
| Coordinates | 37 deg. 21.8 min. N (37.364N), 122 deg. 17.2 min. W (122.286W) |
| Depth | 0.14 km (0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=6.0 km, Rmss=0.06 sec, Erho=0.27 km, Erzz=4.59000015 km, Gp=104 degrees |
| Event ID# | nc75327067 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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