FVXX21 KWBC 201841
VOLCANIC ASH ADVISORY
ISSUED: 2003APR20/1900Z VAAC: WASHINGTON
VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1643W06211 AREA: CARIBBEAN
SUMMIT ELEVATION: 3000 FT (915 M)
ADVISORY NUMBER: 2003/422
INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST.
UPPER AIR SOUNDING
ERUPTION DETAILS: CONTINUED EMISSION OF GASES AND ASH.
OBS ASH DATE/TIME: 20/1815Z
OBS ASH CLOUD: SFC/FL070 N1643W06211 N1704W06205 N1711W06219
N1704W06238 N1643W06211 MOVING N 15-20 KNOTS.
FCST ASH CLOUD +6H: SEE SIGMETS
REMARKS: VISIBLE IMAGERY SHOWS A PLUME OF ASH EXTENDING TO THE
NORTH AND NORTHWEST OF THE VOLCANO. THE ASH IS ESTIMATED AT FL070
AND IS MOVING AT 15-20 KNOTS. THE LEADING EDGE OF THE ASH BECOMES
DIFFICULT TO DETERMINE BECAUSE CLOUDS OBSCURE THE ASH BOUNDARY.
NEXT ADVISORY: WILL BE ISSUED BY 2003APR21/0100Z
NNNN
"Attached Graphic Map Depicting Ash Only"
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