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 1:38:29 PM (PDT) on Monday, September 1, 2025.
The magnitude 1.6 event occurred 15 km (9 miles) S of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Monday, September 1, 2025 at 1:38:29 PM (PDT) Monday, September 1, 2025 at 20:38:29 (UTC) |
| Distance from |
Ridgemark, CA - 15 km (9 miles) S (170 degrees) Hollister, CA - 19 km (12 miles) SSE (164 degrees) Chualar, CA - 20 km (13 miles) NE (53 degrees) Gonzales, CA - 22 km (13 miles) NNE (26 degrees) San Juan Bautista, CA - 26 km (16 miles) SE (136 degrees) |
| Coordinates | 36 deg. 40.8 min. N (36.681N), 121 deg. 20.3 min. W (121.338W) |
| Depth | 2.85 km (1.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=20, Nph=20, Dmin=3.1 km, Rmss=0.18 sec, Erho=0.41 km, Erzz=1 km, Gp=56 degrees |
| Event ID# | nc75231752 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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