FVXX22 KWBC 240830 VOLCANIC ASH ADVISORY ISSUED 0830 UTC 24 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1106 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. THE GEOPHYSICAL INSTITUTE. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 24/0745 UTC SHOWS EXTENSIVE CLOUDINESS OVER THE AREA MAKING ANY DETECTION OF ASH DIFFICULT. THE LAST REPORT OF ASH FROM THE GEOPHYSICAL INSTITUTE WAS AT 23/1342 UTC WHICH INDICATED ASH AT FL250 MOVING WEST. THE VOLCANO REMAINS UNSTABLE AND MAY ERUPT AT ANY TIME. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL250 WOULD MOVE WEST TO SOUTHWEST AT UP TO 10 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 24/1430 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. . KARST . NNNN