FVXX21 KWBC 151100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1100 UTC 15 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-570 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR WIND FORECAST FROM THE 15/0000 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 15/1015 UTC SHOWS THICK LAYERED CLOUDS OBSCURING THE AREA OVER AND AROUND THE VOLCANO MAKING DETECTION OF ASH DIFFICULT. AT 15/1029 UTC THE GEOPHYSICAL INSTITUTE HOWEVER DID REPORT ASH TO FL250. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL250 WOULD MOVE TOWARD THE WEST-SOUTHWEST AT 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 15/1700 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