Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #908844: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 0:11:29 AM (PST) on Tuesday, December 23, 2025.
The magnitude 2.6 event occurred 14 km (8 miles) NW of Portola, CA.
The hypocentral depth is -1 km (-1 miles).
| Magnitude | 2.6 - local magnitude (Ml) |
| Time | Tuesday, December 23, 2025 at 0:11:29 AM (PST) Tuesday, December 23, 2025 at 8:11:29 (UTC) |
| Distance from |
Portola, CA - 14 km (8 miles) NW (325 degrees) East Quincy, CA - 29 km (18 miles) E (95 degrees) Quincy, CA - 33 km (21 miles) E (95 degrees) Greenville, CA - 42 km (26 miles) SE (127 degrees) Janesville, CA - 43 km (27 miles) S (184 degrees) |
| Coordinates | 39 deg. 54.6 min. N (39.910N), 120 deg. 33.6 min. W (120.560W) |
| Depth | -1.36 km (-0.80 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=13, Nph=21, Dmin=17.0 km, Rmss=0.31 sec, Erho=0.73 km, Erzz=6.38000011 km, Gp=217 degrees |
| Event ID# | nc75285166 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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