FVXX21 KWBC 230600 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0600 UTC 23 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-480 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 24/0000 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE AND THE GUAYAQUIL MWO. . ERUPTION DETAILS: CONTINUOUS GASES AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 24/0415 UTC SHOWS MULTI-LAYERED CLOUDS OVER THE AREA OF THE VOLCANO MAKING DETECTION OF ASH DIFFICULT. THE LAST REPORT OF ASH WAS AT 23/2256 UTC WITH ASH TO FL260. . TRAJECTORY: ASH TO FL260 WOULD MOVE TOWARDS THE WEST-SOUTHWEST AT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 24/01200 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