FVXX23 KWBC 111925
.
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1925 UTC 11 DEC 1999 BY THE WASHINGTON VAAC
.
SOUFRIERE HILLS 99-271    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
1845 UTC SHOWS A DETACHED AREA OF THIN LOW LEVEL ASH BOUNDED BY
12.4N 62.6W   15.8N63.6W  15.6N63.4W   15.9N62.8W AND 16.4N62.6W. 
ASH ESTIMATED BELOW FL050 IS MOVING TOWARD THE SSW AND DISSIPATING. 
.
TRAJECTORY: MOVEMENT IS 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 
.
THIS IS THE LAST STATEMENT FOR THIS EVENT. 
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
.
NNNN"Attached Graphic Map Depicting Ash" 

""