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 3:34:40 PM (PST) on Tuesday, February 18, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) S of Portola Valley, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Tuesday, February 18, 2025 at 3:34:40 PM (PST) Tuesday, February 18, 2025 at 23:34:40 (UTC) |
| Distance from |
Portola Valley, CA - 5 km (3 miles) S (175 degrees) Los Altos Hills, CA - 9 km (6 miles) WSW (241 degrees) Woodside, CA - 10 km (6 miles) SSE (168 degrees) West Menlo Park, CA - 11 km (7 miles) SSW (193 degrees) Stanford, CA - 11 km (7 miles) SSW (211 degrees) |
| Coordinates | 37 deg. 20.3 min. N (37.339N), 122 deg. 13.8 min. W (122.230W) |
| Depth | 7.23 km (4.50 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=4.3 km, Rmss=0.06 sec, Erho=0.34 km, Erzz=0.699999988 km, Gp=62 degrees |
| Event ID# | nc75135902 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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