== 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 9:52:20 PM (PDT) on Wednesday, May 7, 2008.
The magnitude 1.9 event occurred 11 km (7 miles) ENE (77 degrees) of Yountville, CA.
The hypocentral depth is 5 km ( 3 miles).

Magnitude		1.9 - duration magnitude (Md)
Time		Wednesday, May 7, 2008 at 9:52:20 PM (PDT) Thursday, May 8, 2008 at 4:52:20 (UTC)
Distance from		Yountville, CA - 11 km (7 miles) ENE (77 degrees) Napa, CA - 15 km (9 miles) NNE (18 degrees) Saint Helena, CA - 22 km (14 miles) ESE (114 degrees) Santa Rosa, CA - 42 km (26 miles) E (92 degrees)
Coordinates		38 deg. 25.5 min. N (38.424N), 122 deg. 14.0 min. W (122.234W)
Depth		5.4 km (3.4 miles)
Quality		Good
Location Quality Parameters		Nst= 25, Nph= 25, Dmin=2 km, Rmss=0.16 sec, Erho=0.3 km, Erzz=0.7 km, Gp=79.2 degrees
Event ID#		nc51202331
Additional Information		map || waveforms
		Waveforms

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

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