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 6:22:04 AM (PDT) on Thursday, October 16, 2025.
The magnitude 1.9 event occurred 1 km (1 miles) NE (45 degrees) of San Leandro, CA.
The hypocentral depth is 6 km ( 3 miles).
| Magnitude | 1.9 - duration magnitude (Md) |
| Time | Thursday, October 16, 2025 at 6:22:04 AM (PDT) Thursday, October 16, 2025 at 13:22:04 (UTC) |
| Distance from |
San Leandro, CA - 1 km (1 miles) NE (45 degrees) Ashland, CA - 5 km (3 miles) NNW (328 degrees) San Lorenzo, CA - 6 km (4 miles) NNW (343 degrees) Cherryland, CA - 7 km (4 miles) NNW (329 degrees) Castro Valley, CA - 7 km (4 miles) NW (311 degrees) |
| Coordinates | 37 deg. 44.0 min. N (37.734N), 122 deg. 8.7 min. W (122.145W) |
| Depth | 5.54 km (3.40 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=32, Nph=30, Dmin=2.5 km, Rmss=0.07 sec, Erho=0.16 km, Erzz=0.289999992 km, Gp=46 degrees |
| Event ID# | nc75250141 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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