FVXX22 KWBC 200430 VOLCANIC ASH ADVISORY ISSUED 0430 UTC 20 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1161 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. TWELVE HOUR WIND FORECAST FROM THE 19/1200 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH CLOUD: NO ASH IS SEEN IN THE SATELLITE IMAGERY THROUGH 20/0345 UTC. THE GEOPHYSICAL INSTITUTE REPORTS NO ACTIVITY HAS OCCURRED AT THE VOLCANO SINCE THE MODERATE EXPLOSION AND ASH EMISSION 18/2100 UTC. . TRAJECTORY: ANY REMAINING ASH AT SUMMIT LEVEL WOULD MOVE TOWARD THE WEST NORTHWEST AT 20 KNOTS. OUTLOOK: SEE SIGMETS. . THIS IS THE LAST ADVISORY ON THIS EVENT. 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. . WALTER . NNNN