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 2:01:49 AM (PDT) on Thursday, August 20, 2026.
The magnitude 1.3 event occurred 15 km (10 miles) SSW of Ridgemark, CA.
The hypocentral depth is 4 km ( 3 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Thursday, August 20, 2026 at 2:01:49 AM (PDT) Thursday, August 20, 2026 at 9:01:49 (UTC) |
| Distance from |
Ridgemark, CA - 15 km (10 miles) SSW (204 degrees) Chualar, CA - 15 km (9 miles) NNE (30 degrees) Salinas, CA - 18 km (11 miles) E (89 degrees) Hollister, CA - 18 km (11 miles) S (191 degrees) Gonzales, CA - 20 km (12 miles) N (2 degrees) |
| Coordinates | 36 deg. 41.2 min. N (36.687N), 121 deg. 26.2 min. W (121.437W) |
| Depth | 4.21 km (2.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=7.2 km, Rmss=0.05 sec, Erho=0.34 km, Erzz=1.38 km, Gp=95 degrees |
| Event ID# | nc75421692 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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