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== PRELIMINARY EARTHQUAKE 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 earthquake occurred at 1:13:57 AM (PDT) on Monday, August 12, 2019.
The magnitude 1.0 event occurred 6 km (4 miles) NE (39 degrees) of San Bernardino, CA.
The hypocentral depth is 3 km ( 2 miles).



Magnitude 1.0 - local magnitude (Ml)
Time Monday, August 12, 2019 at 1:13:57 AM (PDT)
Monday, August 12, 2019 at 8:13:57 (UTC)
Distance from San Bernardino, CA - 6 km (4 miles) NE (39 degrees)
Highland, CA - 6 km (4 miles) NW (321 degrees)
Crestline, CA - 8 km (5 miles) SSE (158 degrees)
Muscoy, CA - 9 km (5 miles) ENE (77 degrees)
Lake Arrowhead, CA - 10 km (6 miles) SW (214 degrees)
Coordinates 34 deg. 10.3 min. N (34.172N), 117 deg. 15.1 min. W (117.251W)
Depth 2.78 km (1.7 miles)
Quality Good
Location Quality Parameters Nst=46, Nph=77, Dmin=4.2 km, Rmss=0.17 sec, Erho=0.17 km, Erzz=0.22 km, Gp=32 degrees
Event ID# ci38958360
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