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 2:25:52 PM (PDT) on Saturday, September 27, 2025.
The magnitude 1.8 event occurred 5 km (3 miles) SE of Bay Point, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Saturday, September 27, 2025 at 2:25:52 PM (PDT) Saturday, September 27, 2025 at 21:25:52 (UTC) |
| Distance from |
Bay Point, CA - 5 km (3 miles) SE (134 degrees) Pittsburg, CA - 5 km (3 miles) SW (228 degrees) Clayton, CA - 7 km (4 miles) N (9 degrees) Concord, CA - 9 km (5 miles) ENE (66 degrees) Antioch, CA - 10 km (6 miles) W (267 degrees) |
| Coordinates | 38 deg. 0.0 min. N (38.000N), 121 deg. 55.4 min. W (121.924W) |
| Depth | 5.02 km (3.10 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=23.8 km, Rmss=0.20 sec, Erho=7.96 km, Erzz=15.8400002 km, Gp=190 degrees |
| Event ID# | nc75242727 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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