FVXX21 KWBC 210100 VOLCANIC ASH ADVISORY ISSUED 0100 UTC 21 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-722 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: VISIBLE SATELLITE IMAGERY THROUGH 20/2245 UTC SHOWED A VERY FAINT PLUME EXTENDING A SHORT DISTANCE WEST FROM THE VOLCANO THAT WAS CONFIRMED TO BE MOSTLY GASES WITH LIGHT ASH NEAR THE SUMMIT TO AROUND FL220. NO ASH IS CURRENTLY DETECTABLE IN IMAGERY. . TRAJECTORY: ASH FROM THE SUMMIT TO FL220 WILL MOVE TOWARD THE WEST AROUND 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 21/0700 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORIES 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. . NNNN