FVXX22 KWBC 210553
VOLCANIC ASH ADVISORY             
ISSUED: 2003MAY21/0550Z      VAAC: WASHINGTON
 
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/045
 
INFORMATION SOURCE:  GOES-9 IMAGERY. UPPER AIR SOUNDING

ERUPTION DETAILS: ONGOING ASH EMISSIONS...FIRST ERUPTION BEGAN
MAY 10
 
OBS ASH DATE/TIME: 21/0449Z
 
OBS ASH CLOUD: SFC/FL160 29 NM WIDE LINE OF ASH EXTENDING
BETWEEN N1621E14540 N1609E14420.  ASH IS MOVING W 5-10 KNOTS.

SFC/FL090 29 NM WIDE LINE OF ASH EXTENDING BETWEEN N1553E14427
N1443E14358.  ASH IS MOVING S 5-10 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS. 

REMARKS: SATELLITE IMAGERY THROUGH 0449Z SHOWED A HIGHER LEVEL
PLUME ESTIMATED NEAR FL160 EXTENDING 80 NM TO THE WEST OF THE
SUMMIT.  A SECOND AREA OF LOWER LEVEL ASH ESTIMATED TO FL090
STRETCHED FOR 76 NM.  TURK 

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY21/1130Z.

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"Attached Graphic Map Depicting Ash Only" 

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