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Southern California Earthquake Data Center

Recent Earthquakes

Recent Earthquakes in California and Nevada

== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California

Version #2: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.


A micro earthquake occurred at 2:16:42 PM (PDT) on Sunday, May 5, 2013.
The magnitude 0.4 event occurred 13 km (8 miles) SE of Viola, CA.
The hypocentral depth is 4 km ( 3 miles).




Magnitude 0.4 - duration magnitude (Md)
Time Sunday, May 5, 2013 at 2:16:42 PM (PDT)
Sunday, May 5, 2013 at 21:16:42 (UTC)
Distance from Viola, CA - 13 km (8 miles) SE (124 degrees)
Chester, CA - 31 km (20 miles) WNW (301 degrees)
Burney, CA - 49 km (30 miles) S (169 degrees)
Redding, CA - 73 km (45 miles) ESE (102 degrees)
Coordinates 40 deg. 27.1 min. N (40.452N), 121 deg. 33.0 min. W (121.549W)
Depth 4.2 km (2.6 miles)
Quality Good
Location Quality Parameters Nst= 8, Nph= 8, Dmin=3 km, Rmss=0.07 sec, Erho=0.7 km, Erzz=0.6 km, Gp=111.6 degrees
Event ID nc71071544
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