FVXX21 KWBC 152100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2100 UTC 15 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-446 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE ... INFRARED AND MULTISPECTRAL IMAGERY...REPORTS FROM THE GEOPHYSICAL INSTITUTE. US NATIONAL WEATHER SERVICE FORECAST MODELS . ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 15/1815 UTC DOES NOT SHOW ANY ASH ALTHOUGH THERE ARE SOME CLOUDS IN THE AREA AND IMAGERY IS LIMITED TO ONE IMAGE EVERY 3 HOURS TO SUPPORT US NATIONAL WEATHER SERVICE OPERATIONS. THE GEOPHYSICAL INSTITUTE REPORTED ASH AT FL300 OVER THE VOLCANO AT 15/1835 UTC. . TRAJECTORY: ASH FROM THE SUMMIT TO FL300 IS FORECASTED BY NATIONAL WEATHER SERVICE MODELS TO MOVE TOWARD THE WEST TO WEST SOUTHWEST AT 10-15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 16/0300 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