Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 11:03:23 AM (PDT) on Wednesday, July 23, 2025.
The magnitude 0.7 event occurred 3 km (2 miles) SW of Clayton, CA.
The hypocentral depth is -0.20 km (-0.10 miles).
| Magnitude | 0.7 - duration magnitude (Md) |
| Time | Wednesday, July 23, 2025 at 11:03:23 AM (PDT) Wednesday, July 23, 2025 at 18:03:23 (UTC) |
| Distance from |
Clayton, CA - 3 km (2 miles) SW (216 degrees) Concord, CA - 8 km (5 miles) SE (137 degrees) Waldon, CA - 9 km (5 miles) E (96 degrees) Diablo, CA - 9 km (6 miles) N (1 degrees) Walnut Creek, CA - 10 km (6 miles) E (82 degrees) |
| Coordinates | 37 deg. 55.1 min. N (37.918N), 121 deg. 57.4 min. W (121.957W) |
| Depth | -0.20 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=6, Nph=6, Dmin=3.5 km, Rmss=0.03 sec, Erho=0.33 km, Erzz=31.61 km, Gp=84 degrees |
| Event ID# | nc75214027 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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