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 5:17:18 PM (PDT) on Wednesday, October 22, 2025.
The magnitude 1.3 event occurred 9 km (6 miles) ESE of Ridgemark, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Wednesday, October 22, 2025 at 5:17:18 PM (PDT) Thursday, October 23, 2025 at 0:17:18 (UTC) |
| Distance from |
Ridgemark, CA - 9 km (6 miles) ESE (118 degrees) Hollister, CA - 14 km (8 miles) SE (127 degrees) San Juan Bautista, CA - 25 km (15 miles) ESE (109 degrees) Chualar, CA - 31 km (19 miles) NE (44 degrees) Gonzales, CA - 33 km (21 miles) NNE (27 degrees) |
| Coordinates | 36 deg. 46.4 min. N (36.774N), 121 deg. 16.5 min. W (121.275W) |
| Depth | 10.10 km (6.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=3.3 km, Rmss=0.04 sec, Erho=0.42 km, Erzz=1.49000001 km, Gp=137 degrees |
| Event ID# | nc75253126 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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