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== 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 1:13:16 PM (PST) on Tuesday, November 3, 2009.
The magnitude 1.6 event occurred 13 km (8 miles) ESE of Viola, CA.
The hypocentral depth is 5 km ( 3 miles).



Magnitude 1.6 - duration magnitude (Md)
Time Tuesday, November 3, 2009 at 1:13:16 PM (PST)
Tuesday, November 3, 2009 at 21:13:16 (UTC)
Distance from Viola, CA - 13 km (8 miles) ESE (121 degrees)
Chester, CA - 31 km (19 miles) WNW (303 degrees)
Burney, CA - 48 km (30 miles) SSE (168 degrees)
Redding, CA - 73 km (46 miles) E (101 degrees)
Coordinates 40 deg. 27.4 min. N (40.457N), 121 deg. 32.4 min. W (121.541W)
Depth 4.7 km (2.9 miles)
Quality Good
Location Quality Parameters Nst= 9, Nph= 9, Dmin=2 km, Rmss=0.06 sec, Erho=0.4 km, Erzz=0.7 km, Gp=140.4 degrees
Event ID# nc71304665
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