FVXX21 KWBC 100700 VOLCANIC ASH ADVISORY ISSUED 0700 UTC 10 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-933 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. AUGUST 9 GEOPHYSICAL INSTITUTE REPORT. SIGMET FROM THE GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 10/0615 UTC POSSIBLY BECAUSE OF THE EXTENSIVE WEATHER CLOUDS COVERING THE AREA. A SIGMET INDICATES THAT ASH AT ABOUT FL230 WAS OBSERVED BY THE GEOPHYSICAL INSTITUTE AT 10/0124 UTC. . TRAJECTORY: ASH WAS OBSERVED OVER THE VOLCANO MOVING TOWARD THE WEST. UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT ABOUT FL230 WOULD MOVE TOWARD THE WEST AT APPROXIMATELY 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 10/1300 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. . NNNN