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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 12:30:23 PM (PDT) on Wednesday, July 19, 2023.
The magnitude 0.9 event (a probable quarry explosion) occurred 7 km (4 miles) E (96 degrees) of Bonita, CA.
The hypocentral depth is -0.44 km (-0.3 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Wednesday, July 19, 2023 at 12:30:23 PM (PDT) Wednesday, July 19, 2023 at 19:30:23 (UTC) |
| Distance from |
Bonita, CA - 7 km (4 miles) E (96 degrees) La Presa, CA - 7 km (5 miles) SSE (148 degrees) Chula Vista, CA - 9 km (6 miles) ENE (73 degrees) Jamul, CA - 10 km (6 miles) SW (225 degrees) Rancho San Diego, CA - 11 km (7 miles) S (190 degrees) |
| Coordinates | 32 deg. 39.1 min. N (32.652N), 116 deg. 57.3 min. W (116.955W) |
| Depth | -0.44 km (-0.3 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=5.4 km, Rmss=0.27 sec, Erho=1.11 km, Erzz=31.61 km, Gp=181 degrees |
| Event ID# | ci39616794 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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