FVXX21 KWBC 160530 VOLCANIC ASH ADVISORY ISSUED 0530 UTC 16 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1083 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 16/0345 UTC SHOWS NO CURRENT INDICATION OF ASH IN THE VICINITY OF THE VOLCANO. . TRAJECTORY: ANY ASH IN THE VICINITY OF THE SUMMIT TO FL200 IS FORECAST TO MOVE WEST AROUND 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 16/1130 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. . . NNNN