Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 12:23:15 PM (PDT) on Monday, October 6, 2025.
The magnitude 1.4 event (a probable quarry explosion) occurred 6 km (4 miles) ESE of Chula Vista, CA.
The hypocentral depth is -0.44 km (-0.30 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Monday, October 6, 2025 at 12:23:15 PM (PDT) Monday, October 6, 2025 at 19:23:15 (UTC) |
| Distance from |
Chula Vista, CA - 6 km (4 miles) ESE (105 degrees) Bonita, CA - 7 km (4 miles) SE (137 degrees) San Ysidro, CA - 9 km (6 miles) NE (40 degrees) Tijuana, B.C., MX - 10 km (6 miles) NNE (21 degrees) La Presa, CA - 11 km (7 miles) S (172 degrees) |
| Coordinates | 32 deg. 36.8 min. N (32.613N), 116 deg. 58.9 min. W (116.981W) |
| Depth | -0.44 km (-0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=26, Nph=26, Dmin=4.9 km, Rmss=0.24 sec, Erho=0.69 km, Erzz=31.61 km, Gp=109 degrees |
| Event ID# | ci41103983 |
| 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)
