FVXX21 KWBC 290800 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0800 UTC 29 OCTOBER 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-044 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 AND INFRARED AND MULTISPECTRAL IMAGERY NATIONAL WEATHER SERVICE NUMERICAL WEATHER MODEL DATA. . ERUPTION DETAILS: OCCASIONAL VENTING OF ASH AND STEAM. . DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 29/0715 UTC SHOWS EXTENSIVE CLOUDINESS OVER THE AREA OF THE VOLCANO MAKING DETECTION OF VOLCANIC ASH IMPOSSIBLE. HOWEVER..REPORTS FROM THE QUITO GEOPHYSICAL INSTITUTE PASSED ON BY THE GUAYAQUILL MWO INDICATED ASH OVER THE VOLCANO TO FL220. . TRAJECTORY: NUMERICAL MODEL DATA SUGGEST ASH AT FL220 WOULD MOVE TOWARD THE SOUTH AT 5-10 KT. . 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/) . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED AROUND 29/1400 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . SCHWARTZ/SAB/NOAA/NESDIS . NNNN