FVXX21 KWBC 210530 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0530 UTC 21 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-339 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVN MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: NEARLY CONTINUOUS VENTING OF GASES WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH IS DETECTABLE IN GOES IMAGERY THROUGH 0345 UTC THAT SHOWED EXTENSIVE CLOUD COVER OVER THE REGION. IMAGERY WILL RESUME AT 0630 UTC AND IF ANY ASH IS DETECTED AN UPDATE WILL BE SENT. . TRAJECTORY: ANY ASH BELOW FL300 WILL MOVE WESTERLY AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 21/1130 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. . NNNN