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 11:13:18 PM (PDT) on Wednesday, September 30, 2026.
The magnitude 1.8 event occurred 4 km (3 miles) NW of Santa Rosa, CA.
The hypocentral depth is 7 km ( 5 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Wednesday, September 30, 2026 at 11:13:18 PM (PDT) Thursday, October 1, 2026 at 6:13:18 (UTC) |
| Distance from |
Santa Rosa, CA - 4 km (3 miles) NW (308 degrees) Larkfield-Wikiup, CA - 5 km (3 miles) S (171 degrees) Roseland, CA - 6 km (4 miles) NNW (347 degrees) Sebastopol, CA - 11 km (7 miles) NE (42 degrees) Windsor, CA - 11 km (7 miles) SE (142 degrees) |
| Coordinates | 38 deg. 28.3 min. N (38.472N), 122 deg. 44.6 min. W (122.743W) |
| Depth | 7.35 km (4.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=41, Nph=40, Dmin=11.5 km, Rmss=0.11 sec, Erho=0.19 km, Erzz=0.769999981 km, Gp=45 degrees |
| Event ID# | nc75442181 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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