Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 3:44:01 AM (PDT) on Sunday, August 31, 2025.
The magnitude 0.5 event occurred 16 km (10 miles) S of Ridgemark, CA.
The hypocentral depth is 0.33 km (0.20 miles).
| Magnitude | 0.5 - duration magnitude (Md) |
| Time | Sunday, August 31, 2025 at 3:44:01 AM (PDT) Sunday, August 31, 2025 at 10:44:01 (UTC) |
| Distance from |
Ridgemark, CA - 16 km (10 miles) S (170 degrees) Chualar, CA - 20 km (12 miles) NE (56 degrees) Hollister, CA - 20 km (13 miles) SSE (164 degrees) Gonzales, CA - 21 km (13 miles) NNE (28 degrees) Soledad, CA - 27 km (17 miles) N (359 degrees) |
| Coordinates | 36 deg. 40.3 min. N (36.672N), 121 deg. 20.0 min. W (121.334W) |
| Depth | 0.33 km (0.20 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=12, Nph=16, Dmin=4.2 km, Rmss=0.09 sec, Erho=0.19 km, Erzz=0.48 km, Gp=69 degrees |
| Event ID# | nc75231172 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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