FVXX21 KWBC 220700 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0700 UTC 22 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-472 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 WIND FORECAST FROM THE 22/0000 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 22/0615 UTC SHOWS MID AND HIGH LEVEL CLOUDINESS OVER THE SUMMIT MAKING DETECTION OF ASH DIFFICULT. HOWEVER AN OCCASIONAL HOT SPOT CAN BE SEEN IN THE SHORTWAVE INFRARED AND REFLECTIVITY CHANNELS. . TRAJECTORY: ASH UP TO FL250 WOULD MOVE TOWARDS THE WEST AT 15 KNOTS. ASH FROM FL250 TO FL300 WOULD MOVE TOWARDS THE SOUTHWEST AT 15 KNOTS. . THE NEXT STATEMENT WILL BE ISSUED BY 22/1300 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