FVXX22 KWBC 170403
VOLCANIC ASH ADVISORY             
ISSUED: 2003MAY17/0400Z      VAAC: WASHINGTON
 
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/028
 
INFORMATION SOURCE:  GOES-9 IMAGERY. UPPER AIR SOUNDING

ERUPTION DETAILS: ERUPTION BEGAN APPROXIMATELY 10/0730Z.
 
OBS ASH DATE/TIME: 17/0302Z
 
OBS ASH CLOUD: SFC/FL120 55 NM WIDE LINE OF ASH EXTENDING BETWEEN
N1621E14540 N1629E14242 N1818E14102. ASH IS MOVING W AT 15-20
KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS. 

REMARKS: VISIBLE IMAGERY AT 0302Z INDICATED A PLUME OF ASH
EXTENDING APPROXIMATELY 285 NM WEST OF THE VOLCANO.  THE PLUME
WAS ONLY ABOUT 20 NM WIDE FROM THE SUMMIT TO N1625E14324 BEFORE
TURNING NW NEAR N1629E14242 AT 175 NM OUT AND BECOMING BROADER.

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY17/1000Z.

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"Attached Graphic Map Depicting Ash Only" 

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