FVXX21 KWBC 292030 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2030 UTC 29 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-375 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. 29/1800 UTC UPPER WIND FORECAST FROM THE 29/1200 UTC AVN MODEL. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1745 UTC SHOWS EXTENSIVE LOW AND MID LEVEL CLOUDS IN THE VICINITY OF THE VOLCANO. IT IS DIFFICULT TO DETECT ANY ASH FROM SATELLITE BUT THE LATEST AIRCRAFT OBSERVATION AT 29/1352 UTC REPORTED VOLCANIC ASH OVER THE VOLCANO TO FL230 MOVING TOWARDS THE WEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH TO FL230 WOULD MOVE TOWARDS THE WEST SOUTHWEST AT 20 TO 30 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 30/0230 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