FVXX21 KWBC 170900 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0900 UTC 17 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-202 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR FORECAST FROM THE 17/0000 UTC AVIATION MODEL. . ERUPTION DETAILS: PERIODIC ASH AND STEAM EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 0815 UTC SHOWS NO SIGNS OF ANY ASH. CLOUDS ARE CURRENTLY OBSCURING MUCH OF THE AREA SURROUNDING THE VOLCANO. THE VOLCANO REMAINS IN A VERY ACTIVE STATE AND COULD ERUPT ANYTIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH ABOVE FL270 WOULD MOVE TO THE WEST NORTHWEST AT 20 TO 30 KTS. WINDS BELOW FL270 ARE VARIABLE AND LESS THAN 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 17/1500 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. . . NNNN