FVXX21 KWBC 160800 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0800 UTC 16 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-125 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL UPPER-AIR DATA AND UPPER AIR WIND DATA FROM INSTITUTO GEOFISCIO. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS . DETAILS OF ASH: ASH DESCRIBED ON THE PREVIOUS ADVISORY STATEMENT DATED 12/0215 IS NO LONGER VISIBLE ON SATELLITE IMAGERY. CURRENT GOES-8 SATELLITE IMAGERY THROUGH 16/0715 UTC DOES NOT SHOW ANY DEFINITIVE ASH PLUME DUE TO SCATTERED CLOUDS MOVING THROUGH THE AREA. . TRAJECTORY: ANY ASH BETWEEN FL300 AND FL350 WOULD MOVE WEST TO NORTH WEST AT 25 TO 35 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 AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 16/1400 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN