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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 8:17:14 PM (PST) on Wednesday, December 5, 2018.
The magnitude 0.4 event occurred 9 km (6 miles) NE (43 degrees) of Aguanga, CA.
The hypocentral depth is 4 km ( 3 miles).



Magnitude 0.4 - local magnitude (Ml)
Time Wednesday, December 5, 2018 at 8:17:14 PM (PST)
Thursday, December 6, 2018 at 4:17:14 (UTC)
Distance from Aguanga, CA - 9 km (6 miles) NE (43 degrees)
Anza, CA - 13 km (8 miles) WSW (243 degrees)
Palomar Observatory, CA - 17 km (11 miles) NNE (21 degrees)
Idyllwild, CA - 27 km (17 miles) SSW (196 degrees)
Lake Henshaw, CA - 29 km (18 miles) N (354 degrees)
Coordinates 33 deg. 30.1 min. N (33.502N), 116 deg. 47.9 min. W (116.798W)
Depth 4.16 km (2.6 miles)
Quality Excellent
Location Quality Parameters Nst=25, Nph=33, Dmin=1.2 km, Rmss=0.11 sec, Erho=0.21 km, Erzz=0.31 km, Gp=62 degrees
Event ID# ci38387224
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