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 10:46:42 PM (PST) on Sunday, December 21, 2025.
The magnitude 1.7 event occurred 3 km (2 miles) W of Rohnert Park, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Sunday, December 21, 2025 at 10:46:42 PM (PST) Monday, December 22, 2025 at 6:46:42 (UTC) |
| Distance from |
Rohnert Park, CA - 3 km (2 miles) W (274 degrees) Cotati, CA - 3 km (2 miles) WNW (302 degrees) Penngrove, CA - 8 km (5 miles) NW (307 degrees) Roseland, CA - 9 km (6 miles) S (185 degrees) Sebastopol, CA - 10 km (6 miles) SE (132 degrees) |
| Coordinates | 38 deg. 20.5 min. N (38.341N), 122 deg. 44.2 min. W (122.737W) |
| Depth | 3.80 km (2.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=2.6 km, Rmss=0.04 sec, Erho=0.45 km, Erzz=0.649999976 km, Gp=133 degrees |
| Event ID# | nc75284601 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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