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 5:45:49 PM (PDT) on Friday, August 8, 2025.
The magnitude 1.5 event occurred 9 km (6 miles) SE of Chester, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Friday, August 8, 2025 at 5:45:49 PM (PDT) Saturday, August 9, 2025 at 0:45:49 (UTC) |
| Distance from |
Chester, CA - 9 km (6 miles) SE (132 degrees) Greenville, CA - 21 km (13 miles) NW (306 degrees) Quincy, CA - 39 km (24 miles) NNW (334 degrees) East Quincy, CA - 41 km (26 miles) NNW (329 degrees) Susanville, CA - 47 km (29 miles) WSW (247 degrees) |
| Coordinates | 40 deg. 15.0 min. N (40.249N), 121 deg. 9.0 min. W (121.150W) |
| Depth | 9.96 km (6.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=6, Nph=6, Dmin=18.9 km, Rmss=0.09 sec, Erho=0.72 km, Erzz=3.75999999 km, Gp=157 degrees |
| Event ID# | nc75220927 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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