FVXX21 KWBC 160900 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0900 UTC 16 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-198 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 16/0000 UTC AVIATION MODEL. . ERUPTION DETAILS: PERIODIC ASH AND STEAM EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 0815 UTC SHOWS NO SIGN OF ANY ASH. MID-LEVEL CLOUDS COVER THE AREA NEAR VOLCANO OBSCURING ANY LOW LEVEL ASH THAT MAY BE PRESENT. TUNGURAHUA REMAINS IN A VERY ACTIVE STATE AND COULD PRODUCE ASH AT ANYTIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR BELOW FL250 TO MOVE WEST AT 10 TO 18 KNOTS. ANY ASH ABOVE FL250 WOULD MOVE NORTHWEST AT 20 TO 30 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 16/1500 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