FVXX21 KWBC 261835 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1835 UTC 26 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-243 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE REPORT. 1800 UTC AVIATION MODEL WINDS FORECAST. GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET . ERUPTION DETAILS: NEARLY CONTINUOUS EMISSION OF GASES WITH OCCASIONAL EMISSION OF ASH. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE INDICATED VOLCANIC ASH WAS OVER THE SUMMIT AND MOVING WEST AT 1615 UTC. A SUBSEQUENT PILOT REPORT RELAYED THROUGH THE GUAYAQUIL MWO STATED THAT ASH WAS TO FL260 AT 1628 UTC. THE PLUME WAS 22 KM (12 NMI) WIDE AND MOVING TOWARDS THE SOUTHWEST. SATELLITE IMAGERY THROUGH 1745 UTC SHOWED EXTENSIVE MID AND HIGH LEVEL CLOUDS OVER THE SUMMIT AND THE SURROUNDING VICINITY MAKING DETECTION OF ASH BELOW THE CLOUD DECK IMPOSSIBLE. . TRAJECTORY: TOWARDS THE SOUTHWEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 27/0030 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. . TURK . NNNN