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 9:36:48 AM (PDT) on Monday, September 13, 2021.
The magnitude 1.1 event (a probable quarry explosion) occurred 9 km (6 miles) NNW of Big Bear City, CA.
The hypocentral depth is -1 km (-1 miles).
|Magnitude||1.1 - local magnitude (Ml)|
|Time||Monday, September 13, 2021 at 9:36:48 AM (PDT)
Monday, September 13, 2021 at 16:36:48 (UTC)
Big Bear City, CA - 9 km (6 miles) NNW (339 degrees)|
Big Bear Lake, CA - 11 km (7 miles) NNE (15 degrees)
Lucerne Valley, CA - 14 km (9 miles) SE (145 degrees)
Running Springs, CA - 26 km (16 miles) NE (55 degrees)
Lake Arrowhead, CA - 30 km (19 miles) ENE (70 degrees)
|Coordinates||34 deg. 20.4 min. N (34.340N), 116 deg. 52.8 min. W (116.881W)|
|Depth||-1.41 km (-0.9 miles)|
|Location Quality Parameters||Nst=28, Nph=28, Dmin=5.0 km, Rmss=0.17 sec, Erho=0.32 km, Erzz=31.61 km, Gp=60 degrees|
|Additional Information|| Map
For more information, see https://earthquake.usgs.gov
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)