FVXX22 KWBC 211507
VOLCANIC ASH ADVISORY             
ISSUED: 2003MAY21/1500Z      VAAC: WASHINGTON
 
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/047
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST 

ERUPTION DETAILS: ONGOING ASH EMISSIONS...FIRST ERUPTION BEGAN
MAY 10
 
OBS ASH DATE/TIME: 21/14250802Z
 
OBS ASH CLOUD: SFC/FL190 N1621E14540 N1658E14245 N1702E14129
N1618E14105 N1250E14257 N1250E14350 N1621E14540 MOVING W 5-10
KNOTS.

SFC/FL050 N1249E14327 N1206E14248 N1139E13955 N1241E13812
N1844E13649 N2049E13907 N2054E14054 N2040E14113 N1649E14004
N1516E14139   MOVING SW 5-10 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS. 

REMARKS: SATELLITE IMAGERY THROUGH 1425 SHOWS A LARGE AREA OF ASH
WEST AND SOUTH OF THE VOLCANO.  THIS ASH IS ESTIMATED TO BE UP
TO FL190.  BASED ON VISIBLE IMAGERY FROM EARLIER THIS MORNING AN
AREA OF PROBABLE ASH ESTIMATED BELOW FL050 IS LIKELY EXTENDING
OUTWARD APPROXIMATELY 520 NM FROM THE VOLCANO.

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY21/2100Z.

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"Attached Graphic Map Depicting Ash Only" 

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