== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California

Version #1: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 0:43:39 AM (PDT) on Wednesday, May 8, 2013.
The magnitude 1.9 event occurred 12 km (7 miles) NNW of Healdsburg, CA.
The hypocentral depth is 4 km ( 2 miles).

Magnitude		1.9 - duration magnitude (Md)
Time		Wednesday, May 8, 2013 at 0:43:39 AM (PDT) Wednesday, May 8, 2013 at 7:43:39 (UTC)
Distance from		Healdsburg, CA - 12 km (7 miles) NNW (335 degrees) Cloverdale, CA - 14 km (9 miles) SE (144 degrees) The Geysers, CA - 15 km (9 miles) SW (224 degrees) Santa Rosa, CA - 35 km (22 miles) NNW (328 degrees)
Coordinates		38 deg. 42.3 min. N (38.704N), 122 deg. 55.5 min. W (122.924W)
Depth		4.1 km (2.5 miles)
Quality		Good
Location Quality Parameters		Nst= 29, Nph= 29, Dmin=8 km, Rmss=0.1 sec, Erho=0.2 km, Erzz=1.4 km, Gp=61.2 degrees
Event ID#		nc71987796
Additional Information		map || waveforms
		Waveforms

For more information, see http://quake.wr.usgs.gov/

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