FVXX21 KWBC 251330 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1330 UTC 25 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-100 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET. JANUARY 24 REPORT FROM THE GEOPHYSICAL INSTITUTE. 6 HOUR WIND FORECAST FROM THE 25/0600 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 25/1245 UTC SHOWS CONSIDERABLE CLOUDINESS OVER AND AROUND THE VOLCANO THUS MAKING DETECTION OF ASH IMPOSSIBLE. IN THE REPORT ISSUED ON THE AFTERNOON OF 24 JANUARY THE GEOPHYSICAL INSTITUTE NOTED THE PRESENCE OF A COLUMN OF MOSTLY STEAM WITH SOME ASH UP TO FL200. . TRAJECTORY: ANY ASH AT FL200 WOULD MOVE TOWARD THE WEST AT 5-10 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 25/1930 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS 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. . WALTER . NNNN