FVXX21 KWBC 022000 VOLCANIC ASH ADVISORY ISSUED 2000 UTC 02 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1029 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITITUTE. SIGMETS FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 1915 UTC DUE TO THE INCREASING WEATHER CLOUDS IN THE AREA. IMAGERY AT 1245 UTC SHOWED A NARROW ASH PLUME BELOW FL250 EXTENDING FROM THE SUMMIT TOWARD THE SOUTHWEST. A SIGMET REPORTED ASH AT FL220 MOVING TOWARD THE SOUTHWEST AT 1348 UTC AND 1625 UTC. ANOTHER SIGMET CITED AN AIRCRAFT REPORT OF NORTHWARD MOVING ASH TO FL350 AT 02/1714 UTC BUT THIS CANNOT BE CONFIRMED IN IMAGERY. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL350 WOULD MOVE TO THE SOUTHWEST AT ABOUT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 03/0200 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