FVXX21 KWBC 252300 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2300 UTC 25 NOV 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-167 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL IMAGERY. GEOFISICO INSTITUTO REPORT AND 12Z UPPER LEVEL WINDS INFORMATION. . ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS. . DETAILS OF ASH: SCATTERED CLOUDS CAN BE FOUND OVER THE AREA HOWEVER NO ASH CAN BE DETECTED. THE ASH PLUME PREVIOUSLY SEEN HAS BECOME TO FAINT AND OBSCURED BY CLOUD TO BE DETECTED. THE INSTITUTO REPORTS THAT THE VOLCANO CONTINUES TO EMIT AN ALMOST CONTINUOUS PLUME OF GASES AND ASH. . TRAJECTORY: ANY ASH UP TO FL250 WILL MOVE TO THE NORTH TO NORTHEAST AROUND 10 KNOTS AND ANY ASH FROM FL250 TO FL350 WILL MOVE TOWARDS THE WEST AT 15 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 26/0500 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN