FVXX21 KWBC 302236
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2236 UTC 30 DEC 1999 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 99-316         ECUADOR 1.47S 78.44W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND
MULTISPECTRAL IMAGERY...GEOPHYSICAL INSTITUTE IN QUITO...12-HOUR
FORECAST WINDS FROM 1200 UTC AVIATION NUMERICAL MODEL.
.
ERUPTION DETAILS: INTERMITTENT ASH AND STEAM EMISSIONS...  
.
DETAILS OF ASH: SATELLITE IMAGERY THROUGH 30/2145 UTC SHOWED A THIN
PLUME EXTENDING FROM THE SUMMIT TO 1.7S/78.7E OR TO APPROXIMATELY 30
KM (22 NMI) TO THE SOUTHWEST OF THE SUMMIT.  THE PLUME WAS 15 KM (7
NMI) WIDE. THE ASH WAS ESTIMATED TO BE AT FL190.  THE GEOPHYSICAL
INSTITUTE INDICATED IN THEIR DAILY REPORT FOR THURSDAY THAT A MERE 3
EXPLOSIONS OCCURRED DURING THE DAY. 
.
TRAJECTORY: TOWARDS THE SOUTHWEST AT 5 TO 10 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 BY 31/0430 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
TURK/SAB/NOAA/NESDIS
.
NNNN
"Attached Graphic Map Depicting Ash" 

""