FVXX21 KWBC 091630 VOLCANIC ASH ADVISORY ISSUED 1630 UTC 09 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-676 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSION. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTS THAT THE VOLCANO HAS OCCASIONAL GAS AND ASH EMISSIONS TO AN ALTITUDE BETWEEN FL250 AND FL300. THE SATELLITE IMAGERY THROUGH 09/1545 UTC DOES NOT INDICATE ANY ASH DUE TO EXTENSIVE CLOUDINESS IN THE VICINITY. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT IF THERE IS ANY ASH BETWEEN THE SUMMIT AND FL300 IT WOULD MOVE TOWARDS THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 09/2230 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. . KARST . NNNN