FVXX20 KWBC 220400 VOLCANIC ASH ADVISORY ISSUED 0400 UTC 22 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1168 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. 6 HOUR WIND FORECAST FROM AVIATION MODEL . ERUPTION DETAILS: ERUPTION AROUND 21/2043 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 0315 UTC INDICATES THAT THE VOLCANIC ASH FROM THE EARLIER ERUPTION AT 21/2043 UTC HAS DISSIPATED. AT THAT TIME ASH WAS ESTIMATED AT FL200. THE VOLCANO REMAINS UNSTABLE AND AN ERUPTION MAY OCCUR AT ANY TIME. . TRAJECTORY: ASH FROM THE SUMMIT TO FL200 WILL MOVE TOWARDS THE WEST AT 10 TO 15 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 22/1000 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. . KARST . NNNN