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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 #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 4:47:28 PM (PST) on Tuesday, December 4, 2018.
The magnitude 0.5 event occurred 9 km (6 miles) NE (42 degrees) of Aguanga, CA.
The hypocentral depth is 3 km ( 2 miles).



Magnitude 0.5 - local magnitude (Ml)
Time Tuesday, December 4, 2018 at 4:47:28 PM (PST)
Wednesday, December 5, 2018 at 0:47:28 (UTC)
Distance from Aguanga, CA - 9 km (6 miles) NE (42 degrees)
Anza, CA - 13 km (8 miles) WSW (243 degrees)
Palomar Observatory, CA - 17 km (11 miles) NNE (20 degrees)
Idyllwild, CA - 28 km (17 miles) SSW (196 degrees)
Lake Henshaw, CA - 29 km (18 miles) N (353 degrees)
Coordinates 33 deg. 30.1 min. N (33.502N), 116 deg. 48.0 min. W (116.800W)
Depth 2.66 km (1.7 miles)
Quality Excellent
Location Quality Parameters Nst=15, Nph=18, Dmin=1.1 km, Rmss=0.14 sec, Erho=0.36 km, Erzz=0.31 km, Gp=74 degrees
Event ID# ci38385944
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