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 8:35:34 AM (PDT) on Thursday, July 17, 2025.
The magnitude 1.8 event occurred 5 km (3 miles) ENE (69 degrees) of Concord, CA.
The hypocentral depth is 11 km ( 7 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Thursday, July 17, 2025 at 8:35:34 AM (PDT) Thursday, July 17, 2025 at 15:35:34 (UTC) |
| Distance from |
Concord, CA - 5 km (3 miles) ENE (69 degrees) Clayton, CA - 5 km (3 miles) NNW (338 degrees) Bay Point, CA - 5 km (3 miles) S (177 degrees) Pittsburg, CA - 8 km (5 miles) SW (234 degrees) Pacheco, CA - 10 km (6 miles) E (89 degrees) |
| Coordinates | 37 deg. 59.1 min. N (37.985N), 121 deg. 57.5 min. W (121.959W) |
| Depth | 10.94 km (6.80 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=22.2 km, Rmss=0.31 sec, Erho=24.98 km, Erzz=6.73000002 km, Gp=211 degrees |
| Event ID# | nc75211132 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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