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 2:14:13 PM (PDT) on Monday, September 29, 2025.
The magnitude 1.6 event occurred 15 km (10 miles) S of Ridgemark, CA.
The hypocentral depth is -0.45 km (-0.30 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Monday, September 29, 2025 at 2:14:13 PM (PDT) Monday, September 29, 2025 at 21:14:13 (UTC) |
| Distance from |
Ridgemark, CA - 15 km (10 miles) S (176 degrees) Chualar, CA - 19 km (12 miles) NE (52 degrees) Hollister, CA - 20 km (12 miles) SSE (168 degrees) Gonzales, CA - 20 km (13 miles) NNE (23 degrees) San Juan Bautista, CA - 25 km (16 miles) SE (139 degrees) |
| Coordinates | 36 deg. 40.5 min. N (36.674N), 121 deg. 21.3 min. W (121.354W) |
| Depth | -0.45 km (-0.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=3.7 km, Rmss=0.08 sec, Erho=0.32 km, Erzz=1.14999998 km, Gp=85 degrees |
| Event ID# | nc75243512 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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