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 2:05:39 PM (PST) on Sunday, December 21, 2025.
The magnitude 2.1 event occurred 5 km (3 miles) SW of Ridgemark, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 2.1 - duration magnitude (Md) |
| Time | Sunday, December 21, 2025 at 2:05:39 PM (PST) Sunday, December 21, 2025 at 22:05:39 (UTC) |
| Distance from |
Ridgemark, CA - 5 km (3 miles) SW (226 degrees) Hollister, CA - 8 km (5 miles) S (188 degrees) San Juan Bautista, CA - 14 km (8 miles) ESE (123 degrees) Prunedale, CA - 23 km (14 miles) E (89 degrees) Salinas, CA - 23 km (14 miles) ENE (63 degrees) |
| Coordinates | 36 deg. 46.7 min. N (36.778N), 121 deg. 24.6 min. W (121.410W) |
| Depth | 6.31 km (3.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=36, Nph=36, Dmin=3.7 km, Rmss=0.16 sec, Erho=0.29 km, Erzz=0.680000007 km, Gp=40 degrees |
| Event ID# | nc75284361 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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