FVXX21 KWBC 290830 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0830 UTC 29 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-373 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 29/0600 UTC UPPER WIND FORECAST FROM THE 29/0000 UTC AVN MODEL. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 0815 UTC DOES NOT SHOW ANY DISCERNABLE ASH IN THE VICINITY OF TUNGURAHUA. THE VOLCANO REMAINS IN A HIGHLY ACTIVE STATE AND COULD PRODUCE A SIGNIFICANT ERUPTION AT ANYTIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH FROM SUMMIT LEVEL (FL160) TO FL300 WOULD MOVE SOUTHWEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 29/1430 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. . HUGHES . NNNN