FVXX21 KWBC 260430 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0430 UTC 26 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-168 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL AND INFRARED IMAGERY. GEOFISICO INSTITUTO REPORT AND 00Z UPPER LEVEL WIND FORECAST . ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS . DETAILS OF ASH: NO ASH CAN BE DETECTED IN SATELLITE IMAGERY THROUGH 26/0345 UTC POSSIBLY DUE TO THE SCATTERED WEATHER CLOUDS COVERING MUCH OF THE AREA. THE ASH PLUME PREVIOUSLY SEEN HAS BECOME TOO FAINT AND OBSCURED BY CLOUD TO BE DETECTED. . TRAJECTORY: ANY ASH BETWEEN FL200 AND FL250 WILL MOVE TO THE NORTH OR NORTHEAST AT AROUND 10 KNOTS AND ANY ASH FROM FL250 TO FL350 WILL MOVE TOWARDS THE WEST AT LESS THAN 25 KNOTS. . 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 AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 26/1030 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN