FVXX21 KWBC 230055 VOLCANIC ASH ADVISORY ISSUED 0055 UTC 23 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1172 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL IMAGERY. THE METEOROLOGICAL WATCH OFFICE IN GUAYAQUIL. THE GEOPHYSICAL INSTITUTE. 6 HOUR UPPER AIR WIND FORECAST FROM THE 22/1800 UTC AVIATION MODEL. . ERUPTION DETAILS: THE GEOPHYSICAL INSTITUTE REPORTS AN ASH EMITTING ERUPTION AT 22/2325 UTC. . DETAILS OF ASH CLOUD: EVIDENCE OF AN ASH PLUME IS SEEN IN GOES-8 MULTISPECTRAL IMAGERY. THE ASH PLUME IS MOVING TO THE EAST AND IS ESTIMATED AT FL250. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THE ASH SHOULD MOVE TO THE EAST AT ABOUT 10 KNOTS. . OUTLOOK: SEE SIGMETS. . A STATEMENT WITH GRAPHIC WILL BE ISSUED AS SOON AS POSSIBLE. . 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. . RUMINSKI . NNNN