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 1:43:00 PM (PDT) on Thursday, April 9, 2026.
The magnitude 1.4 event (a probable quarry explosion) occurred 7 km (4 miles) E of Chula Vista, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Thursday, April 9, 2026 at 1:43:00 PM (PDT) Thursday, April 9, 2026 at 20:43:00 (UTC) |
| Distance from |
Chula Vista, CA - 7 km (4 miles) E (100 degrees) Bonita, CA - 7 km (4 miles) SE (132 degrees) San Ysidro, CA - 10 km (6 miles) NE (40 degrees) La Presa, CA - 10 km (6 miles) S (169 degrees) Tijuana, B.C., MX - 10 km (7 miles) NNE (23 degrees) |
| Coordinates | 32 deg. 37.0 min. N (32.617N), 116 deg. 58.6 min. W (116.977W) |
| Depth | 2.92 km (1.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=28, Nph=28, Dmin=4.5 km, Rmss=0.17 sec, Erho=0.49 km, Erzz=0.64 km, Gp=126 degrees |
| Event ID# | ci41436808 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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