FVXX21 KWBC 310025 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0025 UTC 31 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-123 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GEOPHYSICAL INSTITUTE...GOES-8 INFRARED AND MULTISPECTRAL SATELLITE IMAGERY...1200 UTC AVN MODEL FORECAST WINDS. . ERUPTION DETAILS: ERUPTION AT 1600 UTC AS REPORTED BY THE GEOPHYSICAL INSTITUTE. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 30/2345 UTC SHOWED EXTENSIVE CLOUDINESS AROUND THE VOLCANO WHICH HAS HINDERED THE DETECTION OF ASH. THE INSTITUTE REPORTED ASH TO FL330 MOVING WEST-SOUTHWEST. . TRAJECTORY: MOVEMENT TOWARD THE WEST-SOUTHWEST AT 15 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS . THE NEXT STATEMENT WILL BE ISSUED BY 31/0630 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. . BROWN . NNNN