FVXX21 KWBC 152330 VOLCANIC ASH ADVISORY ISSUED 2330 UTC 15 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1082 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: VISIBLE AND INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 15/2245 UTC SHOWS CLOUDS IN THE VICINITY OF THE VOLCANO MAKING IT DIFFICULT TO DETECT ANY ASH. THE INSTITUTE REPORTS CONTINUED NEAR SUMMIT ACTIVITY. . TRAJECTORY: ANY ASH IN THE VICINITY OF THE SUMMIT TO FL200 IS FORECAST TO MOVE WEST AROUND 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 16/0530 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. . . NNNN