FVXX21 KWBC 041901
VOLCANIC ASH ADVISORY           
ISSUED: 2003MAY04/1900Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1643W06211    AREA: CARIBBEAN
 
SUMMIT ELEVATION: 3000 FT (915 M) 

ADVISORY NUMBER: 2003/478
 
INFORMATION SOURCE: GOES-12 IMAGERY.  UPPER AIR SOUNDING.
GFS MODEL WINDS FORECAST  
                   
ERUPTION DETAILS: EMISSION OF GASES AND ASH.
 
OBS ASH DATE/TIME: 04/1815Z
 
OBS ASH CLOUD: SFC/FL100 N1643W06211 N1700W06248 N1701W06328
N1653W06334 N1645W06327 N1642W06311 N1648W06251 N1648W06233 
N1643W06211 MOVING W 15 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS
 
REMARKS: SATELLITE IMAGERY THROUGH 04/1815Z SHOWS THAT SKIES HAVE
CLEARED AROUND THE VOLCANO AND A WELL DEFINE PLUME OF ASH CAN BE
SEEN STRETCHING TO THE WEST.  THIS MORNINGS UPPER AIR WINDS IN
CONJUNCTION WITH CURRENT GFS MODEL WINDS FORECAST SUGGEST THE ASH
IS AT OR BELOW FL100.  ADDITIONALLY OVER THE PAST SIX HOURS AN
OCCASIONAL HOTSPOT HAS BEEN OBSERVED IN THE SHORTWAVE
IMAGERY....WALTER.

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY05/0100Z.

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"Attached Graphic Map Depicting Ash Only" 

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