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 7:34:48 AM (PDT) on Friday, September 4, 2026.
The magnitude 1.1 event occurred 7 km (4 miles) NW of American Canyon, CA.
The hypocentral depth is 18 km (11 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Friday, September 4, 2026 at 7:34:48 AM (PDT) Friday, September 4, 2026 at 14:34:48 (UTC) |
| Distance from |
American Canyon, CA - 7 km (4 miles) NW (318 degrees) Napa, CA - 9 km (5 miles) SSW (198 degrees) Vallejo, CA - 14 km (9 miles) NNW (330 degrees) Green Valley, CA - 14 km (9 miles) WSW (256 degrees) Sonoma, CA - 15 km (9 miles) ESE (122 degrees) |
| Coordinates | 38 deg. 13.4 min. N (38.223N), 122 deg. 19.0 min. W (122.316W) |
| Depth | 18.25 km (11.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=5, Nph=5, Dmin=10.6 km, Rmss=0.01 sec, Erho=1.15 km, Erzz=0.829999983 km, Gp=216 degrees |
| Event ID# | nc75429657 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
[
Index map ||
Big earthquake list ||
All earthquake list ||
Glossary of terms ||
Top page
]
[
Did you feel it? ||
ShakeMaps
|| Relative2Me
]
[ Data Sources ]
Special maps
Long Valley || Los Angeles || San Francisco
Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)
