Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 12:40:49 PM (PST) on Sunday, December 21, 2025.
The magnitude 3.5 event occurred 5 km (3 miles) SW of Ridgemark, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 3.5 - local magnitude (Ml) |
| Time | Sunday, December 21, 2025 at 12:40:49 PM (PST) Sunday, December 21, 2025 at 20:40:49 (UTC) |
| Distance from |
Ridgemark, CA - 5 km (3 miles) SW (233 degrees) Hollister, CA - 7 km (4 miles) S (189 degrees) San Juan Bautista, CA - 13 km (8 miles) ESE (120 degrees) Prunedale, CA - 23 km (14 miles) E (87 degrees) Salinas, CA - 24 km (15 miles) ENE (61 degrees) |
| Coordinates | 36 deg. 47.2 min. N (36.786N), 121 deg. 24.6 min. W (121.410W) |
| Depth | 7.19 km (4.50 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=66, Nph=58, Dmin=4.1 km, Rmss=0.11 sec, Erho=0.16 km, Erzz=0.439999998 km, Gp=38 degrees |
| Event ID# | nc75284286 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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