FVXX21 KWBC 210450 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0450 UTC 21 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-219 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: THE GEOPHYSICAL INSTITUTE IN QUITO. GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0415 UTC SHOWED THUNDERSTORMS DEVELOPING TO THE EAST OF THE SUMMIT WITH MID LEVEL CLOUDS ELSEWHERE. NO ASH WAS DETECTED ABOVE THE CLOUD DECK. YESTERDAYS GEOPHYSICAL INSTITUTE DAILY REPORT INDICATED THAT NO EXPLOSIONS OCCURRED ON SUNDAY. . TRAJECTORY: NIL. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 21/1100 UTC. . 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/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . TURK . NNNN