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 1:02:24 AM (PDT) on Wednesday, October 1, 2025.
The magnitude 1.8 event occurred 10 km (6 miles) ESE of Alum Rock, CA.
The hypocentral depth is -0.31 km (-0.20 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Wednesday, October 1, 2025 at 1:02:24 AM (PDT) Wednesday, October 1, 2025 at 8:02:24 (UTC) |
| Distance from |
Alum Rock, CA - 10 km (6 miles) ESE (114 degrees) East Foothills, CA - 10 km (6 miles) SE (125 degrees) Seven Trees, CA - 11 km (7 miles) ENE (65 degrees) San Jose, CA - 15 km (9 miles) E (95 degrees) Buena Vista, CA - 17 km (11 miles) E (87 degrees) |
| Coordinates | 37 deg. 19.7 min. N (37.329N), 121 deg. 43.4 min. W (121.723W) |
| Depth | -0.31 km (-0.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=26, Nph=24, Dmin=7.3 km, Rmss=0.10 sec, Erho=0.21 km, Erzz=2.54999995 km, Gp=69 degrees |
| Event ID# | nc75243391 |
| 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)
