FVXX21 KWBC 292000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2000 UTC 29 OCTOBER 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-046 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 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 1915 UTC SHOWS DENSE METEOROLOGICAL CLOUDS OVER THE AREA OF THE VOLCANO MAKING IT IMPOSSIBLE TO DETECT ANY ASH. A 1900 UTC SURFACE OBSERVATION REPORTED ASH OVER THE VOLCANO AND MOVING TOWARD THE SOUTHWEST. . TRAJECTORY: NUMERICAL MODEL DATA SUGGEST ASH BETWEEN FL190/270 WOULD MOVE TOWARD THE SOUTH AT 8-18 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 30/0200 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . BROWN/SAB/NOAA/NESDIS . NNNN