FVXX21 KWBC 171430 VOLCANIC ASH ADVISORY ISSUED 1430 UTC 17 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-963 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL WIND FORECAST. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTS THAT VOLCANIC ACTIVITY HAS REMAINED LOW WITH SOME MINOR SEISMIC ACTIVITY THAT WOULD INDICATE ONLY NEAR SUMMIT EMISSIONS OF GASES AND LIGHT ASH. NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 17/1345 UTC BECAUSE OF WEATHER CLOUDS COVERING THE AREA. . TRAJECTORY: 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 17/2030 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