FVXX21 KWBC 211851
VOLCANIC ASH ADVISORY
ISSUED: 2003APR21/1900Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1643W06211    AREA: CARIBBEAN
                              
SUMMIT ELEVATION: 3000 FT (915 M) 
                              
ADVISORY NUMBER: 2003/426
 
INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. 

ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH.
 
OBS ASH DATE/TIME: 21/1815Z
 
OBS ASH CLOUD: SFC/FL070 15 NM WIDE LINE OF ASH EXTENDING BETWEEN
N1643W06211 N1705W06247. ASH IS MOVING NW 10 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS
 
REMARKS:  LATEST VISIBLE IMAGERY SHOWS A PLUME OF ASH EXTENDING 
TO THE NORTHWEST FROM THE SUMMIT. THE LEADING EDGE OF THE ASH IS
APPROXIMATELY 45 NM FROM THE SUMMIT. THE ASH IS ESTIMATED AT
FL070 AND IS MOVING AT 10 KNOTS.

NEXT ADVISORY: WILL BE ISSUED BY 2003APR22/0100Z.

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"Attached Graphic Map Depicting Ash Only" 

"Graphic Map Depicting Ash"