FVXX21 KWBC 122330 VOLCANIC ASH ADVISORY ISSUED 2330 UTC 12 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1070 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. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH WAS DETECTED IN SATELLITE IMAGERY THROUGH 12/2245 UTC. ASH WAS LAST REPORTED BY THE GEOPHYSICAL INSTITUTE AT 12/1045 UTC ESTIMATED TO FL300. . TRAJECTORY: ANY ASH FROM SUMMIT LEVEL TO FL300 WOULD MOVE TOWARDS THE NORTHWEST TO WEST AT ABOUT 15 TO 20 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 13/0530 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. . CLARK . NNNN