FVXX21 KWBC 140900 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0900 UTC 14 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-440 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY... 6 HOUR UPPER WIND FORECAST FROM THE 0000 UTC AVIATION MODEL. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0815 UTC SHOWS LOW AND MID LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO MAKING IT DIFFICULT TO DETECT ANY ASH. THE VOLCANO REMAINS UNSTABLE AND THE GEOPHYSICAL INSTITUTE REPORTS OCCASIONAL EMISSIONS TO FL250. . TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TOWARD THE SOUTHWEST AT 5 TO 10 KTS. OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 14/1500 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. . KARST . NNNN