FVXX21 KWBC 160830 VOLCANIC ASH ADVISORY ISSUED 0830 UTC 16 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-958 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. AUGUST 15 GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 16/0745 UTC POSSIBLY BECAUSE OF LOW LEVEL WEATHER CLOUDS COVERING THE AREA. THE LAST REPORT OF ASH WAS ON THE MORNING OF AUGUST 14 WHEN THREE MODERATE EXPLOSIONS PRODUCED ASH TO ABOUT FL200. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT IF THERE IS ANY ASH BETWEEN THE SUMMIT AND FL200 IT WOULD MOVE TOWARD THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 16/1430 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