FVXX21 KWBC 201254
VOLCANIC ASH ADVISORY
ISSUED: 2003APR20/1300Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1643W06211    AREA: CARIBBEAN
                              
SUMMIT ELEVATION: 3000 FT (915 M) 
                              
ADVISORY NUMBER: 2003/421
 
INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST.
UPPER AIR SOUNDING

ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH.
 
OBS ASH DATE/TIME: 20/1215Z
 
OBS ASH CLOUD: SFC/FL070 10 NM WIDE LINE OF ASH EXTENDING BETWEEN
N1643W06211 N1709W06222. ASH IS MOVING NW 15-20 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS
 
REMARKS:  VISIBLE IMAGERY SHOWS A NARROW PLUME OF ASH EXTENDING
TO THE NORTHWEST OF THE VOLCANO. THE ASH IS ESTIMATED AT FL070
AND IS MOVING NORTHWEST AT 15-20 KNOTS. A STRONG HOTSPOT CAN BE
SEEN IN SHORTWAVE IMAGERY.

NEXT ADVISORY: WILL BE ISSUED BY 2003APR20/1900Z

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"Attached Graphic Map Depicting Ash Only" 

"Graphic Map Depicting Ash"