FVXX22 KWBC 232308
VOLCANIC ASH ADVISORY            
ISSUED: 2003MAY23/2305Z      VAAC: WASHINGTON

VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/057
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST.
MEDIA REPORTS.  
  
ERUPTION DETAILS: ONGOING ASH EMISSIONS...FIRST ERUPTION BEGAN
MAY 10
 
OBS ASH DATE/TIME: 23/2213Z
 
OBS ASH CLOUD: SFC/FL170 N1621E14532 N1444E14532 N1411E14610
N1340E14815 N1421E14830 N1501E14700 N1622E14547. ASH IS MOVING S
15-20 KNOTS. BECOMING SE 20 KNOTS. 

FCST ASH CLOUD +6H: SEE SIGMETS AND VAFTAD. 

REMARKS: A FAIRLY THICK ASH PLUME IS MOVING SOUTH FROM THE
VOLCANO. THE ASH MOVES DIRECTLY OVER THE ISLAND OF SAIPAN IN THE
MARIANAS. THE PLUME FANS OUT SLIGHTLY AS IS DOES SO AND THEN
TURNS SOUTHEASTERLY INTO THE LOW LEVEL INFLOW OF TYPHOON CHAN-
HON.  THE PLUME IS ESTIMATED UP TO FL170. VOLCANIC SMOG IS BEING
REPORTED IN SAIPAN. DUE TO IMAGERY NAVIGATION PROBLEMS WITH GOES-
9 ASH CLOUD POINTS WERE ESTIMATED AND MAY HAVE A SLIGHT ERROR OF
UP TO 0.5 OF A DEGREE.   

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY24/0500Z.

NNNN
"Attached Graphic Map Depicting Ash Only" 

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