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 9:29:43 AM (PDT) on Monday, October 27, 2025.
The magnitude 1.2 event occurred 7 km (5 miles) NNW of Lafayette, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Monday, October 27, 2025 at 9:29:43 AM (PDT) Monday, October 27, 2025 at 16:29:43 (UTC) |
| Distance from |
Lafayette, CA - 7 km (5 miles) NNW (337 degrees) Orinda, CA - 8 km (5 miles) NNE (19 degrees) Martinez, CA - 8 km (5 miles) S (190 degrees) Vine Hill, CA - 8 km (5 miles) SW (214 degrees) Pleasant Hill, CA - 8 km (5 miles) W (269 degrees) |
| Coordinates | 37 deg. 56.8 min. N (37.946N), 122 deg. 9.0 min. W (122.150W) |
| Depth | 14.03 km (8.70 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=13, Nph=13, Dmin=3.0 km, Rmss=0.01 sec, Erho=0.64 km, Erzz=0.49000001 km, Gp=195 degrees |
| Event ID# | nc75255376 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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