FVXX22 KWBC 230830 VOLCANIC ASH ADVISORY ISSUED 0830 UTC 23 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1102 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 23/0715 UTC SHOWS EXTENSIVE CLOUDINESS OVER THE REGION MAKING IT DIFFICULT TO DETECT ANY ASH. THE LAST REPORT OF ASH FROM THE GEOPHYSICAL INSTITUTE WAS APPROXIMATELY 24 HOURS AGO. THE VOLCANO REMAINS UNSTABLE AND MAY ERUPT AT ANY TIME. . TRAJECTORY: ANY ASH AT NEAR SUMMIT LEVEL WOULD MOVE TOWARD THE WEST SOUTHWEST AT 10 TO 15 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT ADVISORY WILL BE ISSUED BY 23/1430 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