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 3:36:29 PM (PDT) on Thursday, October 23, 2025.
The magnitude 2.8 event occurred 8 km (5 miles) NNE (14 degrees) of Orinda, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 2.8 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 3:36:29 PM (PDT) Thursday, October 23, 2025 at 22:36:29 (UTC) |
| Distance from |
Orinda, CA - 8 km (5 miles) NNE (14 degrees) Lafayette, CA - 8 km (5 miles) NNW (332 degrees) Martinez, CA - 8 km (5 miles) SSW (194 degrees) Pleasant Hill, CA - 8 km (5 miles) W (268 degrees) Pacheco, CA - 8 km (5 miles) WSW (240 degrees) |
| Coordinates | 37 deg. 56.7 min. N (37.946N), 122 deg. 9.5 min. W (122.158W) |
| Depth | 14.14 km (8.80 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=32, Nph=31, Dmin=3.0 km, Rmss=0.05 sec, Erho=0.22 km, Erzz=0.370000005 km, Gp=52 degrees |
| Event ID# | nc75253586 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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