FVXX20 KWBC 212150 VOLCANIC ASH ADVISORY ISSUED 2150 UTC 21 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1166 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. 6 HOUR WIND FORECAST FROM AVIATION MODEL . ERUPTION DETAILS: ERUPTION AROUND 21/2043 UTC. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTS A SEISMIC SIGNAL CONSISTENT WITH AN ASH EMMISSION HOWEVER THEY COULD NOT VISUALLY CONFIRM AN ASH PLUME DUE TO CLOUDS OVER THE SUMMIT. MULTISPECTRAL SATELLITE IMAGERY DOES SUGGEST A BRIEF PUFF WITH ASH BETWEEN THE SUMMIT AND FL200. . TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL200 WILL MOVE TO THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 22/0400 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. . RUMINSKI . NNNN