FVXX21 KWBC 180000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0000 UTC 18 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-133 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. UPPER-AIR DATA AND REPORTS FROM THE GEOFISICO INSTITUTO. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS . DETAILS OF ASH: MULTISPECTRAL IMAGERY THRU 2315 UTC DOES NOT SHOW ANY ASH BEING EMITTED FROM THE VOLCANO. VISIBLE IMAGERY SHOWED EXTENSIVE CLOUDINESS OVER THE AREA. . TRAJECTORY: ANY ASH BELOW FL250 WOULD MOVE WESTWARD AT 15 TO 20 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 18/0600 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN