FVXX21 KWBC 240800 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0800 UTC 24 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-159 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. BREAKS IN THE CLOUDS HAVE ALLOWED FOR THE DETECTION OF A HOT SPOT IN MULTISPECTRAL IMAGERY. 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 24/1400 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . TURK . NNNN