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 9:55:45 AM (PDT) on Monday, September 1, 2025.
The magnitude 1.4 event occurred 11 km (7 miles) NNW of Healdsburg, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Monday, September 1, 2025 at 9:55:45 AM (PDT) Monday, September 1, 2025 at 16:55:45 (UTC) |
| Distance from |
Healdsburg, CA - 11 km (7 miles) NNW (339 degrees) Cloverdale, CA - 14 km (9 miles) SE (142 degrees) The Geysers, CA - 16 km (10 miles) WSW (239 degrees) Windsor, CA - 19 km (12 miles) NNW (334 degrees) Cobb, CA - 21 km (13 miles) SW (232 degrees) |
| Coordinates | 38 deg. 42.2 min. N (38.704N), 122 deg. 54.9 min. W (122.916W) |
| Depth | 7.62 km (4.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=15, Nph=15, Dmin=9.4 km, Rmss=0.05 sec, Erho=0.48 km, Erzz=1.35000002 km, Gp=122 degrees |
| Event ID# | nc75231667 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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