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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 2:22:51 AM (PST) on Tuesday, December 4, 2018.
The magnitude 0.4 event occurred 10 km (6 miles) NE (38 degrees) of Aguanga, CA.
The hypocentral depth is 5 km ( 3 miles).



Magnitude 0.4 - local magnitude (Ml)
Time Tuesday, December 4, 2018 at 2:22:51 AM (PST)
Tuesday, December 4, 2018 at 10:22:51 (UTC)
Distance from Aguanga, CA - 10 km (6 miles) NE (38 degrees)
Anza, CA - 12 km (8 miles) WSW (249 degrees)
Palomar Observatory, CA - 19 km (12 miles) NNE (19 degrees)
Idyllwild, CA - 26 km (16 miles) SSW (196 degrees)
Valle Vista, CA - 27 km (17 miles) SSE (161 degrees)
Coordinates 33 deg. 30.9 min. N (33.515N), 116 deg. 47.9 min. W (116.798W)
Depth 4.83 km (3.0 miles)
Quality Excellent
Location Quality Parameters Nst=31, Nph=54, Dmin=0.3 km, Rmss=0.11 sec, Erho=0.14 km, Erzz=0.41 km, Gp=45 degrees
Event ID# ci38152695
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