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 4:57:26 AM (PDT) on Tuesday, September 9, 2025.
The magnitude 1.0 event occurred 3 km (2 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Tuesday, September 9, 2025 at 4:57:26 AM (PDT) Tuesday, September 9, 2025 at 11:57:26 (UTC) |
| Distance from |
Pacifica, CA - 3 km (2 miles) SE (134 degrees) San Bruno, CA - 6 km (4 miles) SW (225 degrees) Millbrae, CA - 6 km (4 miles) W (264 degrees) Montara, CA - 7 km (5 miles) NE (42 degrees) Hillsborough, CA - 7 km (5 miles) WNW (286 degrees) |
| Coordinates | 37 deg. 35.5 min. N (37.592N), 122 deg. 27.6 min. W (122.459W) |
| Depth | 8.59 km (5.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=6, Nph=6, Dmin=3.6 km, Rmss=0.01 sec, Erho=0.68 km, Erzz=1.55999994 km, Gp=129 degrees |
| Event ID# | nc75235447 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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