FVXX23 KWBC 111335
.
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1335 UTC 11 DEC 1999 BY THE WASHINGTON VAAC
.
SOUFRIERE HILLS 99-270    WEST INDIES 16.7N 62.2W  
.
BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000 FT (915M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE AND MULTISPECTRAL SATELLITE
IMAGERY...1200 UTC SOUNDING FROM GUADELOUPE.
.
ERUPTION DETAILS: ERUPTION AROUND 11/1100 UTC.
.
DETAILS OF ASH CLOUD: THE LATEST GOES-8 VISIBLE SATELLITE IMAGERY AT
1302 UTC SHOWS A PLUME OF THIN LOW LEVEL ASH EXTENDING FROM
SOUFRIERE HILLS SOUTHWESTWARD TO 16.39N 62.35W. THE PLUME IS 13KM
(7NMI) WIDE WITH ASH ESTIMATED BELOW FL050.
.
TRAJECTORY: MOVEMENT IS TOWARD THE SSW AT 11 KNOTS.
.
REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH
ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH
LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
.
OUTLOOK: SEE SIGMETS.
.
EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE
AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES
AND MINUTES OF A DEGREE. EXAMPLE...  16.70N 62.20W  WILL BE 
1642N6212W 
.
THE NEXT STATEMENT WILL BE ISSUED AT 11/1930 UTC. 
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
.
NNNN"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"