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 6:42:41 PM (PDT) on Wednesday, September 24, 2025.
The magnitude 1.5 event occurred 15 km (9 miles) SSW of Half Moon Bay, CA.
The hypocentral depth is 13 km ( 8 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Wednesday, September 24, 2025 at 6:42:41 PM (PDT) Thursday, September 25, 2025 at 1:42:41 (UTC) |
| Distance from |
Half Moon Bay, CA - 15 km (9 miles) SSW (195 degrees) El Granada, CA - 18 km (11 miles) S (180 degrees) Portola Valley, CA - 21 km (13 miles) WSW (256 degrees) Woodside, CA - 22 km (14 miles) WSW (242 degrees) Montara, CA - 23 km (14 miles) S (170 degrees) |
| Coordinates | 37 deg. 20.2 min. N (37.337N), 122 deg. 28.2 min. W (122.470W) |
| Depth | 12.94 km (8.00 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=12.7 km, Rmss=0.08 sec, Erho=1.01 km, Erzz=3.16000009 km, Gp=219 degrees |
| Event ID# | nc75241627 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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