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 3:34:18 AM (PDT) on Monday, October 27, 2025.
The magnitude 1.7 event occurred 17 km (11 miles) SSE of Ridgemark, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, October 27, 2025 at 3:34:18 AM (PDT) Monday, October 27, 2025 at 10:34:18 (UTC) |
| Distance from |
Ridgemark, CA - 17 km (11 miles) SSE (164 degrees) Chualar, CA - 21 km (13 miles) ENE (60 degrees) Gonzales, CA - 21 km (13 miles) NE (34 degrees) Hollister, CA - 22 km (13 miles) SSE (159 degrees) Soledad, CA - 27 km (17 miles) N (3 degrees) |
| Coordinates | 36 deg. 39.9 min. N (36.665N), 121 deg. 18.8 min. W (121.313W) |
| Depth | 1.95 km (1.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=14, Nph=14, Dmin=5.6 km, Rmss=0.14 sec, Erho=0.57 km, Erzz=1.04999995 km, Gp=111 degrees |
| Event ID# | nc75255206 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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