FVXX21 KNES 181556
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL18/1556Z   VAAC: WASHINGTON

VOLCANO: SOUFRIERE HILLS 1600-05
LOCATION: N1643W06211   AREA: W.INDIES

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2005/094

INFORMATION SOURCE: GOES-12. GFS MODEL WINDS.
MONTSERRAT OBSERVATORY. 

ERUPTION DETAILS: EXPLOSION AT 18/0700Z

OBS ASH DATE/TIME: 18/1515Z

OBS ASH CLOUD: SFC/FL200 N1755W06427 - N1745W06319
- N1714W06328 - N1616W06402 - N1611W06432 -
N1755W06427 MOVING W 15-20 KNOTS. SFC/FL300
N1846W06310 - N1802W06258 - N1744W06319 -
N1842W06328 - N1846W06310 MOVING NW 13-17 KNOTS.
SFC/FL100 10NM WIDE LINE BETWEEN N1655W06331 -
N1643W06211. ASH IS MOVING W 20 KNOTS. 

FCST ASH CLOUD +6H: 18/2130Z SFC/FL200 N1823W06455
- N1614W06604 - N1613W06640 - N1822W06626 -
N1823W06455 SFC/FL300 N1959W06420 - N1913W06404 -
N1843W06438 - N1938W06438 - N1959W06420 SFC/FL100
20NM WIDE LINE BETWEEN N1647W06326 - N1643W06210. 

FCST ASH CLOUD +12H: 19/0330Z SFC/FL100 20NM WIDE
LINE BETWEEN N1702W06322 - N1641W06210. 

FCST ASH CLOUD +18H: 19/0930Z SFC/FL100 20NM WIDE
LINE BETWEEN N1644W06335 - N1641W06210. 

REMARKS: ASH COULD BE SEEN DISPERSING IN MULTIPLE
DIRECTIONS. THE HIGHEST ASH IS MOVING NNE
CURRENTLY OVER ST. MARTIN. A LARGE AREA OF ASH IS
MOVING WEST APPROACHING ST. CROIX AND THE OCEAN
SOUTH OF IT. HIGH SUN ANGLE IS MAKING THE
BOUNDARIES OF THE ASH VERY DIFFICULT TO
DETERMINE...AND DUE TO ITS THINNING OUT NATURE
WOULD EXPECT ASH TO BE UNDETECTABLE BY 12-18HRS. 
EXPECT LOW LEVEL  OUTGASING WITH ASH EMISSIONS TO
REMAIN ONGOING WITH A DUE WESTWARD MOVEMENT OVER
THE FORECAST PERIOD. ...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL18/2200Z

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