FVXX21 KWBC 121900 VOLCANIC ASH ADVISORY ISSUED 1900 UTC 12 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-943 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. 6 HOUR WIND FORECAST FROM THE 12/1200 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: GASES AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: ASH WAS NOT DETECTED ON THE SATELLITE IMAGERY THROUGH 12/1815 UTC. THE LAST REPORT OF ASH WAS BY THE GEOPHYSICAL INSTITUTE AT 11/2004 UTC WITH UNKNOWN HEIGHT. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL240 WILL MOVE TOWARDS THE SOUTHWEST AT 10 KNOTS . . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 13/0100 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. . WALTER . NNNN