Recent Earthquakes in California and Nevada


== 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 10:40:14 PM (PDT) on Tuesday, July 20, 2021.
The magnitude 0.8 event occurred 17 km (10 miles) NE (37 degrees) of Pine Valley, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Tuesday, July 20, 2021 at 10:40:14 PM (PDT)
Wednesday, July 21, 2021 at 5:40:14 (UTC)
Distance from Pine Valley, CA - 17 km (10 miles) NE (37 degrees)
Julian, CA - 23 km (14 miles) SE (132 degrees)
Alpine, CA - 34 km (21 miles) ENE (70 degrees)
San Diego Country Estates, CA - 35 km (22 miles) ESE (102 degrees)
Borrego Springs, CA - 35 km (22 miles) S (187 degrees)
Coordinates 32 deg. 56.5 min. N (32.942N), 116 deg. 25.2 min. W (116.421W)
Depth 4.97 km (3.1 miles)
Quality Good
Location Quality Parameters Nst=21, Nph=38, Dmin=3.5 km, Rmss=0.19 sec, Erho=0.26 km, Erzz=0.49 km, Gp=54 degrees
Event ID# ci39748087
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