FVXX21 KWBC 11530 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0530 UTC 11 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-299 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. 11/1200 UTC FORECAST UPPER WINDS FROM THE AVIATION MODEL. . ERUPTION DETAILS: POSSIBLE GAS AND ASH EMISSION OCCURRING. . DETAILS OF ASH: GOES-8 VISIBLE IMAGERY THROUGH 1515 UTC SHOWS A THIN PLUME OF ASH AND GASES EMANATING FROM TUNGURAHUA. THE PLUME IS APPROX 18 KM (10 NMI) LONG AND EXTENDS WEST SOUTHWEST (257 DEGREES) TO POINT 0130S 7836W. THE WIDTH IS MEASURED TO BE AT 4 KM (2 NMI). THE HEIGHT IS ESTIMATED TO BE AT FL250. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH EMITTED AT FL250 WOULD MOVE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 11/2130 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. . HUGHES . NNNN