FVXX20 KWBC 131759  
VOLCANIC ASH ADVISORY
ISSUED: 2003APR13/1800Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS   1600-05
LOCATION: N1643W06211    AREA: CARIBBEAN

SUMMIT ELEVATION: 3000 FT (915M)

ADVISORY NUMBER: 2003/404
 
INFORMATION SOURCE: GOES-12 IMAGERY. 12Z UPPER AIR SOUNDING. GFS
MODEL WINDS FORECAST.

ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH.
 
OBS ASH DATE/TIME: 13/1715Z.
 
OBS ASH CLOUD: SFC/FL070 10 NM WIDE LINE OF ASH EXTENDING BETWEEN 
N1643W06211 N1647W06230 N1722W06337 MOVING NW 10-15 KNOTS.
FL070/FL100 N1642W06214 N1632W06246 N1651W06252 MOVING W 10-15
KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS.
 
REMARKS:  SATELLITE IMAGERY THROUGH 1715Z SHOWS TWO THIN PLUMES. 
THE FIRST EXTENDS APPROXIMATELY 92 NM NORTHWEST OF THE SUMMIT. 
THE SECOND AND HIGHER PLUME EXTENDS 40 NM FROM THE SUMMIT.  HOT
SPOT ACTIVITY HAS DIMINISHED.

NEXT ADVISORY: WILL BE ISSUED BY 2003APR14/0000Z.

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"Attached Graphic Map Depicting Ash Only" 

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