FVXX21 KWBC 170230 VOLCANIC ASH ADVISORY ISSUED 0230 UTC 17 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-961 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL WIND FORECAST. AUGUST 16 GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 17/0145 UTC POSSIBLY BECAUSE OF LOW WEATHER CLOUDS COVERING THE AREA. THE GEOPHYSICAL INSTITUTE REPORTS THAT VOLCANIC ACTIVITY HAS REMAINED LOW. . TRAJECTORY: IF THERE IS ANY ASH BETWEEN THE SUMMIT AND FL200 IT WILL MOVE TOWARD THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 17/0830 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