FVXX22 KWBC 200525
VOLCANIC ASH ADVISORY             
ISSUED: 2003MAY20/0530Z      VAAC: WASHINGTON
 
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/041
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST 

ERUPTION DETAILS: ONGOING ASH EMISSIONS...FIRST ERUPTION BEGAN
MAY 10
 
OBS ASH DATE/TIME: 20/0413Z
 
OBS ASH CLOUD: SFC/FL070 40 NM WIDE LINE OF ASH EXTENDING BETWEEN
N1621E14540 N1616E14235. ASH IS MOVING W 10-15 KNOTS.

SFC/FL070 100 NM WIDE LINE OF ASH EXTENDING BETWEEN N1616E14235
N2138E13740.  ASH IS MOVING NW 10 KNOTS. 

SFC/FL070 100 NM WIDE LINE OF ASH EXTENDING BETWEEN N2138E13740
N2419E13910.  ASH IS MOVING NE 15-20 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS. 

REMARKS: VISIBLE IMAGERY SHOWS A ROUGHLY C-SHAPED PLUME AS ASH
FIRST MOVES WEST FROM THE SUMMIT THEN VEERS NORTHWESTWARD AND
THEN BRIEFLY NORTHWARD AND FINALLY MOVES TO THE NORTHEAST. 

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY20/0530Z.

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"Attached Graphic Map Depicting Ash Only" 

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