Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 0:50:10 AM (PDT) on Tuesday, September 16, 2025.
The magnitude 1.3 event occurred 10 km (6 miles) SE of Chester, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Tuesday, September 16, 2025 at 0:50:10 AM (PDT) Tuesday, September 16, 2025 at 7:50:10 (UTC) |
| Distance from |
Chester, CA - 10 km (6 miles) SE (127 degrees) Greenville, CA - 21 km (13 miles) NW (308 degrees) Quincy, CA - 39 km (24 miles) NNW (335 degrees) East Quincy, CA - 41 km (26 miles) NNW (330 degrees) Susanville, CA - 46 km (28 miles) WSW (247 degrees) |
| Coordinates | 40 deg. 15.3 min. N (40.254N), 121 deg. 8.6 min. W (121.143W) |
| Depth | 9.62 km (6.00 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=22, Nph=27, Dmin=0.8 km, Rmss=0.13 sec, Erho=0.21 km, Erzz=0.34 km, Gp=66 degrees |
| Event ID# | nc75238317 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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