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 7:50:11 PM (PST) on Monday, December 22, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) SW of Ridgemark, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, December 22, 2025 at 7:50:11 PM (PST) Tuesday, December 23, 2025 at 3:50:11 (UTC) |
| Distance from |
Ridgemark, CA - 5 km (3 miles) SW (235 degrees) Hollister, CA - 7 km (4 miles) S (190 degrees) San Juan Bautista, CA - 13 km (8 miles) ESE (120 degrees) Prunedale, CA - 23 km (14 miles) E (87 degrees) Aromas, CA - 23 km (15 miles) ESE (119 degrees) |
| Coordinates | 36 deg. 47.2 min. N (36.787N), 121 deg. 24.7 min. W (121.412W) |
| Depth | 6.04 km (3.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=20, Nph=20, Dmin=4.0 km, Rmss=0.16 sec, Erho=0.41 km, Erzz=0.779999971 km, Gp=72 degrees |
| Event ID# | nc75285081 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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