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 8:19:08 PM (PDT) on Thursday, August 14, 2025.
The magnitude 1.0 event occurred 1 km (1 miles) NNE (29 degrees) of Castro Valley, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Thursday, August 14, 2025 at 8:19:08 PM (PDT) Friday, August 15, 2025 at 3:19:08 (UTC) |
| Distance from |
Castro Valley, CA - 1 km (1 miles) NNE (29 degrees) Ashland, CA - 3 km (2 miles) ENE (73 degrees) Cherryland, CA - 3 km (2 miles) NE (38 degrees) Fairview, CA - 4 km (3 miles) NW (312 degrees) San Lorenzo, CA - 5 km (3 miles) ENE (58 degrees) |
| Coordinates | 37 deg. 42.2 min. N (37.703N), 122 deg. 4.8 min. W (122.080W) |
| Depth | 9.50 km (5.90 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=24, Nph=30, Dmin=4.1 km, Rmss=0.09 sec, Erho=0.26 km, Erzz=0.32 km, Gp=69 degrees |
| Event ID# | nc75223957 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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