FVXX21 KNES 181337
VOLCANIC ASH ADVISORY
ISSUED: 2006MAY18/1330Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 3002 FT (915 M)

ADVISORY NUMBER: 2006/362

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

ERUPTION DETAILS: CONTINUED EMISSIONS OF GASES AND
LIGHT ASH.

OBS ASH DATE/TIME: 18/1302Z

OBS ASH CLOUD: SFC/FL050 10NM WIDE LINE BETWEEN
N1651 W06233 - N1641 W06210. ASH IS MOVING NW 10
KNOTS. 

FCST ASH CLOUD +6H: 18/1900Z SFC/FL100 N1702
W06236 - N1640 W06209 - N1625 W06234 - N1702
W06236 

FCST ASH CLOUD +12H: 19/0100Z SFC/FL100 N1702
W06236 - N1639 W06209 - N1634 W06237 - N1702
W06236 

FCST ASH CLOUD +18H: 19/0700Z SFC/FL080 N1654
W06237 - N1638 W06208 - N1631 W06236 - N1654
W06237 

REMARKS: IN THE FIRST VISIBLE IMAGES A FAINT PLUME
COULD BE SEEN MOVING NORTHWEST FROM THE VOLCANO
AROUND 30 NM.  THE VOLCANO OBSERVATORY REPORTS
THAT MOST OF THE ASH IS FALLING OUT OVER THE
ISLAND AND APPEARS TO END SHORTLY OFFSHORE.  IN
IMAGERY THE ASH IS ESTIMATED TO EXTEND ONLY AROUND
10 NM FROM THE SUMMIT AS THE PLUME BECOMES QUITE
FAINT AFTER THAT.  WITH THE HEATING OF THE DAY THE
PLUME MAY RISE SLIGHTLY IN HEIGHT AND THEREFORE
MAY START TO FAN A BIT MORE TO THE WEST.  
...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2006MAY18/1930Z

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