FVXX21 KWBC 231500 VOLCANIC ASH ADVISORY ISSUED 1500 UTC 23 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-987 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 THE AVIATION MODEL. . ERUPTION DETAILS: GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/1415 UTC SHOWED CLOUDS IN THE VICINITY OF THE VOLCANO. THE GEOPHYSICAL INSTITUTE LAST REPORTED VOLCANIC ASH AT 22/2237 OVER THE VOLCANO TO FL300 UTC. . TRAJECTORY: ANY ASH THAT MIGHT EXIST TO FL300 WOULD MOVE TOWARDS THE WEST OR WEST SOUTHWEST BETWEEN 20 AND 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 23/2100 UTC. . REAL TIME SATELLITE IMAGERY AND 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. . TURK . NNNN