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 1:54:55 AM (PDT) on Monday, September 15, 2025.
The magnitude 1.0 event occurred 4 km (2 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Monday, September 15, 2025 at 1:54:55 AM (PDT) Monday, September 15, 2025 at 8:54:55 (UTC) |
| Distance from |
Pacifica, CA - 4 km (2 miles) SE (138 degrees) San Bruno, CA - 6 km (4 miles) SW (221 degrees) Millbrae, CA - 6 km (4 miles) W (259 degrees) Montara, CA - 7 km (4 miles) NE (45 degrees) Hillsborough, CA - 7 km (4 miles) WNW (283 degrees) |
| Coordinates | 37 deg. 35.3 min. N (37.588N), 122 deg. 27.5 min. W (122.458W) |
| Depth | 8.60 km (5.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=3.4 km, Rmss=0.03 sec, Erho=0.67 km, Erzz=1.04999995 km, Gp=131 degrees |
| Event ID# | nc75237937 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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