FVXX22 KNES 212303
VOLCANIC ASH ADVISORY
ISSUED: 2006FEB21/2302Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/071

INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS

OBS ASH DATE/TIME: 21/2245Z

OBS ASH CLOUD: SFC/FL070 20NM WIDE LINE BETWEEN
N1643 W06211 - N1611 W06326. ASH IS MOVING SW
20-25 KNOTS. 

FCST ASH CLOUD +6H: 22/0500Z SFC/FL070 30NM WIDE
LINE BETWEEN N1643 W06210 - N1611 W06340. 

FCST ASH CLOUD +12H: 22/1100Z SFC/FL070 30NM WIDE
LINE BETWEEN N1642 W06208 - N1616 W06358. 

FCST ASH CLOUD +18H: 22/1700Z SFC/FL070 30NM WIDE
LINE BETWEEN N1641 W06210 - N1611 W06409. 

REMARKS: VISIBLE LOOP SHOWED THE ASH PLUME MOVING
SW AND MATCHED UP WELL WITH THE WAKE CONVERGENCE
LINE OF CUMULUS BEFORE LOCAL NIGHTFALL OCCURRED.  
SO USED THE LINE OF CUMULUS AS A MARKER FOR THE
ASH PLUME SINCE WIND DIRECTION HAS NOT CHANGED. 
WIND FORECASTS SHOW AN INCREASE FROM 20KTS TO
30KTS BY THE END OF THE FORECAST...THOUGH WIND
DIRECTION SHOULD REMAIN FAIRLY CONSISTENT. 
...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2006FEB22/0500Z

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