FVXX22 KWBC 141800 VOLCANIC ASH ADVISORY ISSUED 1800 UTC 14 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1138 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. SIGMETS FROM THE GUAYAQUIL METEOROLOGICAL WATCH OFFICE. UPPER WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH CLOUD: LOW AND MID LEVEL CLOUDS OVER THE VOLCANO MAKE IT DIFFICULT TO DETECT ANY ASH IN SATELLITE IMAGERY AT THIS TIME. THE LAST REPORT OF VOLCANIC ASH BY THE GEOPHYSICAL INSTITUTE WAS AT 13/1825 UTC HEIGHT UNKNOWN. THE VOLCANO REMAINS UNSTABLE AND MAY ERUPT AT ANY TIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT IF THERE IS ANY ASH NEAR THE SUMMIT IT WOULD MOVE TOWARD THE WEST AT 10 TO 15 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 15/0000 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