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 9:03:25 PM (PST) on Friday, December 26, 2025.
The magnitude 1.8 event occurred 5 km (3 miles) SW of Ridgemark, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Friday, December 26, 2025 at 9:03:25 PM (PST) Saturday, December 27, 2025 at 5:03:25 (UTC) |
| Distance from |
Ridgemark, CA - 5 km (3 miles) SW (233 degrees) Hollister, CA - 7 km (4 miles) S (190 degrees) San Juan Bautista, CA - 13 km (8 miles) ESE (121 degrees) Prunedale, CA - 23 km (14 miles) E (87 degrees) Salinas, CA - 23 km (15 miles) ENE (61 degrees) |
| Coordinates | 36 deg. 47.1 min. N (36.785N), 121 deg. 24.7 min. W (121.412W) |
| Depth | 6.40 km (4.00 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=16, Nph=16, Dmin=3.9 km, Rmss=0.11 sec, Erho=0.36 km, Erzz=0.670000017 km, Gp=71 degrees |
| Event ID# | nc75286961 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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