FVXX22 KNES 211753
VOLCANIC ASH ADVISORY
ISSUED: 2006APR21/1752Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1642 W06210   AREA: W_INDIES

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/261

INFORMATION SOURCE: GOES-12. GFS WINDS.
RADIOSONDE. 

ERUPTION DETAILS: ONGOING EMISSIONS OF GASES AND
LIGHT ASH

OBS ASH DATE/TIME: 21/1732Z

OBS ASH CLOUD: SFC/FL080 N1737 W06240 - N1722
W06203 - N1643 W06210 - N1641 W06211 - N1720
W06321 - N1737 W06240 MOVING NW -N 5-10 KNOTS. 

FCST ASH CLOUD +6H: 21/2330Z SFC/FL100 25NM WIDE
LINE BETWEEN N1726 W06317 - N1641 W06210. 

FCST ASH CLOUD +12H: 22/0530Z SFC/FL080 25NM WIDE
LINE BETWEEN N1715 W06325 - N1641 W06210. 

FCST ASH CLOUD +18H: 22/1130Z SFC/FL080 25NM WIDE
LINE BETWEEN N1705 W06332 - N1641 W06210. 

REMARKS: THIN ASH CAN BE SEEN MOVING TO THE NORTH
AND NORTHWEST.  GFS MODEL WINDS ARE NOT IN GOOD
AGREEMENT WITH 12Z RADIOSONDE.  ASH MOVING NW
SHOULD BE LOWER THAN ASH MOVING NORTH BUT ALL
BELOW FL100 ...MERCKLE

NEXT ADVISORY: WILL BE ISSUED BY 2006APR21/2345Z

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