FVXX21 KWBC 161930 VOLCANIC ASH ADVISORY ISSUED 1930 UTC 16 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-705 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. UPPER AIR WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 16/1845 UTC SHOWED EXTENSIVE LOW AND MID LEVEL CLOUDS OVER THE VOLCANO MAKING ANY DETECTION OF ASH DIFFICULT. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL230 WOULD MOVE TOWARDS THE WEST-SOUTHWEST AT 20 TO 25 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 17/0130 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER 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