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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 6:28:09 AM (PST) on Tuesday, December 4, 2018.
The magnitude 0.5 event occurred 11 km (7 miles) NE (39 degrees) of Aguanga, CA.
The hypocentral depth is 2 km ( 2 miles).



Magnitude 0.5 - local magnitude (Ml)
Time Tuesday, December 4, 2018 at 6:28:09 AM (PST)
Tuesday, December 4, 2018 at 14:28:09 (UTC)
Distance from Aguanga, CA - 11 km (7 miles) NE (39 degrees)
Anza, CA - 12 km (7 miles) WSW (249 degrees)
Palomar Observatory, CA - 19 km (12 miles) NNE (20 degrees)
Idyllwild, CA - 26 km (16 miles) SSW (195 degrees)
Valle Vista, CA - 27 km (17 miles) SSE (160 degrees)
Coordinates 33 deg. 31.0 min. N (33.517N), 116 deg. 47.5 min. W (116.792W)
Depth 2.48 km (1.5 miles)
Quality Good
Location Quality Parameters Nst=20, Nph=26, Dmin=7.4 km, Rmss=0.19 sec, Erho=0.33 km, Erzz=0.47 km, Gp=56 degrees
Event ID# ci38152839
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