FVXX21 KWBC 230700 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0700 UTC 23 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-476 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 23/0000 UTC AVIATION MODEL. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/0615 UTC SHOWS LAYERED CLOUDS OVER THE AREA OF THE VOLCANO MAKING DETECTION OF ASH DIFFICULT. ASH WAS LAST SEEN ON THE SATELLITE IMAGERY AT 22/2345 UTC WITH THE HEIGHT ESTIMATED TO FL200. . TRAJECTORY: ASH TO FL200 WOULD MOVE TOWARD THE WEST-SOUTHWEST AT 10 TO 15 KNOTS. . THE NEXT STATEMENT WILL BE ISSUED BY 23/1300 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