FVXX21 KWBC 240200 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0200 UTC 24 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-158 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. REPORTS AND WINDS ALOFT INFORMATION FROM THE GEOFISICO INSTITUTO. . ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS. . DETAILS OF ASH: DUE TO THICK CLOUDS OVER THE REGION NO ASH DETECTION IS POSSIBLE AT THIS TIME. THE INSTITUTO HOWEVER REPORTS THAT THE VOLCANO CONTINUES TO EMIT AN ALMOST CONSTANT TRANSMISSION OF GAS AND ASH. . TRAJECTORY: UPPER AIR PATTERNS OVER THE COUNTRY ARE LIGHT AND QUITE VARIABLE AND ANY ASH PRODUCED WILL MOVE IN A DIFFUSE MANOR. . 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 24/0800 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN