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 6:44:50 AM (PST) on Thursday, December 25, 2025.
The magnitude 1.8 event occurred 16 km (10 miles) S of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Thursday, December 25, 2025 at 6:44:50 AM (PST) Thursday, December 25, 2025 at 14:44:50 (UTC) |
| Distance from |
Ridgemark, CA - 16 km (10 miles) S (173 degrees) Chualar, CA - 19 km (12 miles) NE (55 degrees) Gonzales, CA - 20 km (13 miles) NNE (27 degrees) Hollister, CA - 20 km (13 miles) SSE (166 degrees) San Juan Bautista, CA - 26 km (16 miles) SE (138 degrees) |
| Coordinates | 36 deg. 40.2 min. N (36.669N), 121 deg. 20.5 min. W (121.342W) |
| Depth | 2.53 km (1.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=16, Nph=16, Dmin=4.2 km, Rmss=0.16 sec, Erho=0.39 km, Erzz=1.03999996 km, Gp=65 degrees |
| Event ID# | nc75286131 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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