FVXX21 KWBC 230900 VOLCANIC ASH ADVISORY ISSUED 0900 UTC 23 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-986 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. . ERUPTION DETAILS: GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/0815 UTC SHOWS LOW AND MID LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO. THE GEOPHYSICAL INSTITUTE REPORTED VOLCANIC ASH OVER THE VOLCANO TO FL300 AT 22/2237 UTC MOVING WEST. . TRAJECTORY: THE WIND FORECAST FROM THE AVIATION MODEL INDICATES ASH TO FL300 WILL MOVE TO THE WEST OR WESTNORTHWEST AT 10 TO 15 KTS. OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 23/0900 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