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 5:01:16 PM (PDT) on Tuesday, September 16, 2025.
The magnitude 1.8 event occurred 8 km (5 miles) NNE (22 degrees) of Brooktrails, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Tuesday, September 16, 2025 at 5:01:16 PM (PDT) Wednesday, September 17, 2025 at 0:01:16 (UTC) |
| Distance from |
Brooktrails, CA - 8 km (5 miles) NNE (22 degrees) Willits, CA - 12 km (7 miles) N (3 degrees) Laytonville, CA - 22 km (14 miles) SSE (149 degrees) Redwood Valley, CA - 30 km (19 miles) NNW (336 degrees) Covelo, CA - 32 km (20 miles) SSW (196 degrees) |
| Coordinates | 39 deg. 30.9 min. N (39.515N), 123 deg. 20.9 min. W (123.349W) |
| Depth | 5.89 km (3.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=14, Nph=14, Dmin=5.2 km, Rmss=0.04 sec, Erho=0.25 km, Erzz=0.649999976 km, Gp=72 degrees |
| Event ID# | nc75238572 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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