FVXX21 KWBC 030130 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0130 UTC 03 DEC 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-197 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 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 2345 UTC DOES NOT DETECT ANY ASH IN THE VICINITY OF THE VOLCANO. VISIBLE IMAGERY AT 2015 UTC AND 2215 UTC SHOWED A POSSIBLE PLUME WEST NORTHWEST OF THE SUMMIT. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH UP TO FL110 WOULD MOVE WEST TO NORTHWEST AT 5 TO 10 KNOTS. ANY ASH BETWEEN FL200 AND FL300 WOULD MOVE SOUTH TO SOUTHEAST AT ABOUT 5 TO 10 KNOTS. . 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. . ....EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES AND MINUTES OF A DEGREE. EXAMPLE... 16.70N 62.20W WILL BE 1642N6212W . THE NEXT STATEMENT WILL BE ISSUED BY 03/0730 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN