Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 4:39:55 AM (PDT) on Tuesday, September 16, 2025.
The magnitude 2.3 event occurred 12 km (7 miles) S of Ridgemark, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 2.3 - duration magnitude (Md) |
| Time | Tuesday, September 16, 2025 at 4:39:55 AM (PDT) Tuesday, September 16, 2025 at 11:39:55 (UTC) |
| Distance from |
Ridgemark, CA - 12 km (7 miles) S (185 degrees) Hollister, CA - 16 km (10 miles) S (173 degrees) Chualar, CA - 20 km (12 miles) NE (40 degrees) San Juan Bautista, CA - 21 km (13 miles) SE (137 degrees) Gonzales, CA - 23 km (14 miles) NNE (15 degrees) |
| Coordinates | 36 deg. 42.3 min. N (36.705N), 121 deg. 22.6 min. W (121.377W) |
| Depth | 3.69 km (2.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=79, Nph=99, Dmin=2.7 km, Rmss=0.28 sec, Erho=0.21 km, Erzz=0.68 km, Gp=28 degrees |
| Event ID# | nc75238367 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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