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 12:34:37 PM (PDT) on Tuesday, October 21, 2025.
The magnitude 2.1 event occurred 8 km (5 miles) ENE (78 degrees) of Vallejo, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 2.1 - duration magnitude (Md) |
| Time | Tuesday, October 21, 2025 at 12:34:37 PM (PDT) Tuesday, October 21, 2025 at 19:34:37 (UTC) |
| Distance from |
Vallejo, CA - 8 km (5 miles) ENE (78 degrees) Benicia, CA - 9 km (6 miles) N (10 degrees) Crockett, CA - 11 km (7 miles) NE (37 degrees) American Canyon, CA - 12 km (7 miles) ESE (116 degrees) Martinez, CA - 12 km (8 miles) N (357 degrees) |
| Coordinates | 38 deg. 7.7 min. N (38.128N), 122 deg. 8.5 min. W (122.141W) |
| Depth | 4.06 km (2.50 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=0.9 km, Rmss=0.08 sec, Erho=0.92 km, Erzz=0.50999999 km, Gp=219 degrees |
| Event ID# | nc75252511 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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