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 10:48:31 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 1.4 event occurred 12 km (8 miles) SSE of Ridgemark, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Wednesday, August 20, 2025 at 10:48:31 PM (PDT) Thursday, August 21, 2025 at 5:48:31 (UTC) |
| Distance from |
Ridgemark, CA - 12 km (8 miles) SSE (158 degrees) Hollister, CA - 17 km (11 miles) SSE (154 degrees) Chualar, CA - 24 km (15 miles) NE (50 degrees) Gonzales, CA - 25 km (16 miles) NNE (27 degrees) San Juan Bautista, CA - 25 km (16 miles) SE (127 degrees) |
| Coordinates | 36 deg. 42.6 min. N (36.710N), 121 deg. 18.8 min. W (121.314W) |
| Depth | 7.79 km (4.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=2.9 km, Rmss=0.07 sec, Erho=0.52 km, Erzz=1.13 km, Gp=93 degrees |
| Event ID# | nc75226612 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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