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 1:50:38 AM (PDT) on Thursday, October 2, 2025.
The magnitude 1.1 event occurred 13 km (8 miles) NNW of Angwin, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Thursday, October 2, 2025 at 1:50:38 AM (PDT) Thursday, October 2, 2025 at 8:50:38 (UTC) |
| Distance from |
Angwin, CA - 13 km (8 miles) NNW (341 degrees) Middletown, CA - 13 km (8 miles) SE (127 degrees) Calistoga, CA - 14 km (8 miles) NNE (32 degrees) Hidden Valley Lake, CA - 15 km (9 miles) SSE (159 degrees) Saint Helena, CA - 20 km (12 miles) N (353 degrees) |
| Coordinates | 38 deg. 41.0 min. N (38.683N), 122 deg. 29.8 min. W (122.497W) |
| Depth | 7.02 km (4.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=8.2 km, Rmss=0.03 sec, Erho=0.49 km, Erzz=1.35000002 km, Gp=129 degrees |
| Event ID# | nc75243811 |
| 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)
