FVXX21 KWBC 151730 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1730 UTC 15 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-316 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR WIND FORECAST FROM THE 15/0600 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF GASES AND ASH. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 15/1645 UTC SHOWS EXTENSIVE LOW AND MID LEVEL CLOUDS OVER THE AREA MAKING SATELLITE DETECTION OF ASH IMPOSSIBLE. THE GEOPHYSICAL INSTITUTE REPORTS ASH OVER THE VOLCANO AT 15/1632UTC MOVING NORTHEAST. . TRAJECTORY: VOLCANIC ASH HAS BEEN OBSERVED MOVING TOWARDS THE NORTHEAST NEAR THE SUMMIT. BASED ON THE FORECAST MODELS ASH UP TO FL200 WOULD MOVE TOWARDS THE WEST AT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 15/2330 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. . KARST . NNNN