FVXX21 KWBC 232100 VOLCANIC ASH ADVISORY ISSUED 2100 UTC 23 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-988 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 23/2015 UTC SHOWS NO ASH ALTHOUGH THERE ARE EXTENSIVE CLOUDS IN THE AREA. THE GEOPHYSICAL INSTITUTE HAS REPORTED OCCASIONAL EMISSIONS OF ASH AND STEAM. NO HEIGHT ASSIGNMENT HAS BEEN GIVEN RECENTLY. . TRAJECTORY: ANY ASH THAT MIGHT EXIST TO FL300 WOULD MOVE GENREALLY TOWARDS THE WEST AT BETWEEN 15 AND 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 24/0300 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. . . NNNN