FVXX21 KWBC 212130 VOLCANIC ASH ADVISORY ISSUED 2130 UTC 21 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-980 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. THE GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: ASH IS NOT SEEN ON CURRENT SATELLITE IMAGERY THROUGH 21/2045 UTC ALTHOUGH THERE ARE EXTENSIVE CLOUDS PRESENT. . TRAJECTORY: ANY ASH NEAR SUMMIT LEVEL WILL MOVE TOWARDS THE WEST-SOUTHWEST AT ABOUT 10-15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 22/0330 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