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 3:39:39 PM (PDT) on Wednesday, September 17, 2025.
The magnitude 2.2 event occurred 11 km (7 miles) WSW of Rio Vista, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Wednesday, September 17, 2025 at 3:39:39 PM (PDT) Wednesday, September 17, 2025 at 22:39:39 (UTC) |
| Distance from |
Rio Vista, CA - 11 km (7 miles) WSW (245 degrees) Pittsburg, CA - 12 km (7 miles) NE (36 degrees) Antioch, CA - 12 km (8 miles) N (0 degrees) Oakley, CA - 15 km (9 miles) NNW (328 degrees) Bay Point, CA - 17 km (10 miles) NE (55 degrees) |
| Coordinates | 38 deg. 6.8 min. N (38.114N), 121 deg. 48.3 min. W (121.805W) |
| Depth | 4.95 km (3.10 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=87.4 km, Rmss=0.06 sec, Erho=3.89 km, Erzz=8.96000004 km, Gp=210 degrees |
| Event ID# | nc75238952 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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