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 4:13:25 PM (PDT) on Sunday, September 12, 2021.
The magnitude 1.6 event (a probable quarry explosion) occurred 5 km (3 miles) NNW of Boron, CA.
The hypocentral depth is 1 km (0.5 miles).


Magnitude 1.6 - local magnitude (Ml)
Time Sunday, September 12, 2021 at 4:13:25 PM (PDT)
Sunday, September 12, 2021 at 23:13:25 (UTC)
Distance from Boron, CA - 5 km (3 miles) NNW (329 degrees)
Edwards Air Force Base, CA - 27 km (17 miles) ENE (58 degrees)
California City, CA - 30 km (19 miles) ESE (110 degrees)
Johannesburg, CA - 38 km (23 miles) S (186 degrees)
Mojave, CA - 45 km (28 miles) E (92 degrees)
Coordinates 35 deg. 2.1 min. N (35.035N), 117 deg. 40.6 min. W (117.676W)
Depth 0.83 km (0.5 miles)
Quality Fair
Location Quality Parameters Nst=25, Nph=25, Dmin=11.3 km, Rmss=0.16 sec, Erho=0.35 km, Erzz=0.81 km, Gp=110 degrees
Event ID# ci39806823
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)