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 5:32:30 PM (PDT) on Tuesday, September 8, 2026.
The magnitude 1.1 event occurred 1 km (0 miles) N of Middletown, CA.
The hypocentral depth is 6 km ( 3 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Tuesday, September 8, 2026 at 5:32:30 PM (PDT) Wednesday, September 9, 2026 at 0:32:30 (UTC) |
| Distance from |
Middletown, CA - 1 km (0 miles) N (349 degrees) Hidden Valley Lake, CA - 8 km (5 miles) SW (222 degrees) Cobb, CA - 12 km (7 miles) SE (128 degrees) The Geysers, CA - 12 km (8 miles) E (100 degrees) Lower Lake, CA - 17 km (11 miles) S (182 degrees) |
| Coordinates | 38 deg. 45.5 min. N (38.758N), 122 deg. 37.0 min. W (122.616W) |
| Depth | 5.51 km (3.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=5.7 km, Rmss=0.04 sec, Erho=0.88 km, Erzz=1.25 km, Gp=171 degrees |
| Event ID# | nc75432117 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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