FVXX21 KWBC 021930 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1930 UTC 02 DEC 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-196 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND MULTISPECTRAL AND INFRARED IMAGERY. AVIATION MODEL WIND FORECAST. REPORT FROM THE GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS AND OCCASIONAL EXPLOSIONS OF ASH. . DETAILS OF ASH: SATELLITE IMAGERY THRU 1845 UTC DOES NOT DETECT ANY ASH IN THE VICINITY OF THE VOLCANO. A SIGMET FROM GUAYAQUIL MENTIONS THAT VOLCANIC ASH OVER THE VOLCANO IS MOVING NORTHWEST AT FL300. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT FL300 WOULD MOVE WEST TO NORTHWEST AT 5 TO 10 KTS. . 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/) . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 03/0130 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . KARST/NOAA/NESDIS/SAB . NNNN