FVXX21 KWBC 302030 VOLCANIC ASH ADVISORY ISSUED 2030 UTC 30 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1118 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. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1945 UTC SHOWS EXTENSIVE CLOUDS OVER THE VOLCANO MAKING ANY DETECTION OF ASH AND STEAM DIFFICULT. THE VOLCANO REMAINS UNSTABLE AND AN ERUPTION MAY OCCUR AT ANY TIME. . TRAJECTORY: ANY ASH THAT MIGHT EXIST NEAR THE SUMMIT LEVEL WOULD MOVE TOWARDS THE WEST AT APPROXIMATELY 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE AT 01/0230 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