FVXX20 KWBC 221000 VOLCANIC ASH ADVISORY ISSUED 1000 UTC 22 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1169 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: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE IN QUITO REPORTED A VOLCANIC EMISSION AT 22/0338 UTC. AN EARLIER EMISSION WAS ESTIMATED BY THE INSTITUTE AT FL200. SATELLITE IMAGERY THROUGH 0915 UTC DOES NOT INDICATE ANY ASH. THE VOLCANO REMAINS UNSTABLE AND ADDITIONAL ERUPTIONS 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 22/1600 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