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 10:42:38 AM (PDT) on Thursday, October 23, 2025.
The magnitude 0.8 event occurred 7 km (5 miles) NNW of Lafayette, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 0.8 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 10:42:38 AM (PDT) Thursday, October 23, 2025 at 17:42:38 (UTC) |
| Distance from |
Lafayette, CA - 7 km (5 miles) NNW (333 degrees) Orinda, CA - 8 km (5 miles) NNE (15 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 (239 degrees) |
| Coordinates | 37 deg. 56.7 min. N (37.945N), 122 deg. 9.4 min. W (122.157W) |
| Depth | 13.95 km (8.70 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=2.9 km, Rmss=0.02 sec, Erho=0.81 km, Erzz=1.11000001 km, Gp=207 degrees |
| Event ID# | nc75253396 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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