FVXX21 KWBC 281230 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1230 UTC 28 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-250 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE FORECAST WINDS. AVIATION MODEL WINDS FORECAST. 6 HOUR WIND FORECAST FROM THE 28/0600 UTC AVIATION MODEL. . ERUPTION DETAILS: NEARLY CONTINUOUS EMISSION OF GASES AND ASH. . DETAILS OF ASH: NO ASH CAN BE DETECTED IN SATELLITE IMAGERY THRU 28/1115 UTC DUE TO EXTENSIVE LOW AND MID LEVEL CLOUDS. HOWEVER AT 28/1125 UTC AN AIRCRAFT REPORTED ASH OVER THE VOLCANO TO FL240 EXTENDING 10NM TO THE WEST-NORTHWEST. . TRAJECTORY: ASH AT FL240 WOULD MOVE TOWARD THE WEST-NORTHWEST AT 20 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 28/1830 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. . WALTER . NNNN