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 2:41:02 AM (PDT) on Friday, August 22, 2025.
The magnitude 1.9 event occurred 11 km (7 miles) SE of Chester, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.9 - duration magnitude (Md) |
| Time | Friday, August 22, 2025 at 2:41:02 AM (PDT) Friday, August 22, 2025 at 9:41:02 (UTC) |
| Distance from |
Chester, CA - 11 km (7 miles) SE (136 degrees) Greenville, CA - 19 km (12 miles) WNW (303 degrees) Quincy, CA - 37 km (23 miles) NNW (334 degrees) East Quincy, CA - 39 km (24 miles) NNW (328 degrees) Susanville, CA - 47 km (29 miles) WSW (244 degrees) |
| Coordinates | 40 deg. 14.1 min. N (40.234N), 121 deg. 8.5 min. W (121.141W) |
| Depth | 6.12 km (3.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=27, Nph=32, Dmin=1.5 km, Rmss=0.19 sec, Erho=0.31 km, Erzz=0.49 km, Gp=65 degrees |
| Event ID# | nc75227067 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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