FVXX21 KWBC 261930 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1930 UTC 26 OCTOBER 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-034 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..GEOPHYSICAL INSTITUTE AND NATIONAL WEATHER SERVICE NUMERICAL MODELS . ERUPTION DETAILS: CONTINUOUS VENTING OF ASH AND STEAM. . DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 26/1745 UTC SHOWS THE AREA SHROUDED IN CLOUDS MAKING DETECTION OF ASH IMPOSSIBLE. . THE QUITO GEOPHYSICAL INSTITUTE THROUGH THE GUAYAQUIL MWO REPORTS ASH FROM THE VOLCANO AT FL200 MOVING TOWARD THE SOUTHWEST AT 10KT FROM THE VOLCANO. . TRAJECTORY: NATIONAL WEATHER SERVICE NUMERICAL METEOROLOGICAL MODELS PREDICT THAT ANY ASH AT FL200 WOULD MOVE TOWARD THE SOUTHWEST AT 10-15 KTS. . 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 27/0200 UTC. . . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER/SAB/NOAA/NESDIS . NNNN