FVXX21 KWBC 120648 VOLCANIC ASH ADVISORY ISSUED 0648 UTC 12 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1067 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: INFRARED AND MULTISPECTRAL IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: STEAM AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH WAS DETECTED IN SATELLITE IMAGERY THROUGH 12/0345 UTC. ASH WAS LAST OBSERVED IN SATELLITE IMAGERY AT 11/1845 UTC AND WAS ESTIMATED BY THE GEOPHYSICAL INSTITUTE TO BE NEAR FL200. . TRAJECTORY: ANY ASH FROM SUMMIT LEVEL TO FL200 WOULD MOVE TOWARDS THE WEST AT 15 TO 25 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 12/1300 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. . TURK . NNNN