FVXX21 KWBC 201100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1100 UTC 20 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-216 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: THE GEOPHYSICAL INSTITUTE IN QUITO. GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR WIND FORECAST FROM THE AVIATION MODEL. UPPER AIR SOUNDING FROM 0000 UTC. . ERUPTION DETAILS: A CONTINUOUS PLUME OF GASES WITH PERIODIC ERUPTION OF ASH. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 20/1015 UTC BECAUSE OF METEOROLOGICAL CLOUDS. HOWEVER A HOT SPOT IS OCCASIONALLY SEEN IN BREAKS IN THE CLOUDINESS. BASED ON INFORMATION FROM THE GEOPHYSICAL INSTITUTE ANY ASH THAT MIGHT BE PRESENT IS BELIEVED TO BE AT ABOUT FL180. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AROUND FL180 WILL MOVE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 20/1700 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. . RUMINSKI . NNNN