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 7:39:29 PM (PDT) on Monday, September 15, 2025.
The magnitude 1.2 event occurred 12 km (7 miles) S of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Monday, September 15, 2025 at 7:39:29 PM (PDT) Tuesday, September 16, 2025 at 2:39:29 (UTC) |
| Distance from |
Ridgemark, CA - 12 km (7 miles) S (181 degrees) Hollister, CA - 16 km (10 miles) S (170 degrees) Chualar, CA - 20 km (13 miles) NE (41 degrees) San Juan Bautista, CA - 22 km (13 miles) SE (135 degrees) Gonzales, CA - 23 km (15 miles) NNE (17 degrees) |
| Coordinates | 36 deg. 42.5 min. N (36.708N), 121 deg. 22.0 min. W (121.367W) |
| Depth | 3.09 km (1.90 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=22, Nph=25, Dmin=1.8 km, Rmss=0.08 sec, Erho=0.2 km, Erzz=0.39 km, Gp=65 degrees |
| Event ID# | nc75238222 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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