FVXX21 KWBC 120300 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0300 UTC 12 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-431 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY... AVIATION MODEL WINDS ALOFT FORECAST MODEL. . ERUPTION DETAILS: ASH AND STEAM EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0215 UTC SHOWS LOW AND MID CLOUDS CONTINUING OVER THE VOLCANO. THE CLOUD COVER MAKES DETECTION OF ANY ASH DIFFICULT. THE GEOPHYSICAL INSTITUTE REPORTS THAT ASH HAS BEEN AS HIGH AS FL250. . TRAJECTORY: ASH BETWEEN FL200 AND FL250 IS MOVING TOWARD THE WEST AT 15 TO 20 KTS. OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 12/0900 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