FVXX21 KWBC 131900 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1900 UTC 13 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-563 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. 6 HOUR WIND FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 13/1815 UTC SHOWS EXTENSIVE CLOUDS OVER THE AREA SURROUNDING THE SUMMIT MAKING DETECTION OF ASH DIFFICULT. THE LAST GEOPHYSICAL INSTITUTE REPORT AT 13/1514 UTC INDICATED ASH OVER THE VOLCANO. THE HEIGHT OF THE ASH HAS BEEN ESTIMATED AT FL200. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL200 WOULD MOVE TOWARD THE WEST SOUTHWEST AT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 14/0100 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. . CLARK . NNNN