FVXX21 KWBC 150840 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0840 UTC 15 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-444 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...REPORTS FROM THE GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 15/0815 UTC SHOWS NO SIGNS OF ASH. THE GEOPHYSICAL INSTITUTE LAST REPORTED ASH OVER THE VOLCANO AT 14/1950 UTC. THE LAST REPORTED HEIGHT OF ASH WAS TO FL220 AT 14/1414 UTC. SCATTERED LOW TO MID LEVEL CLOUDS ARE OBSCURING THE SUMMIT SOMEWHAT WHICH IS MAKING IT MORE DIFFICULT TO DETECT ASH. WHILE THERE HAVE BEEN NO RECENT REPORTS OF ERUPTIONS THE VOLCANO HAS BEEN QUITE ACTIVE OVER THE LAST WEEK AND SO CAUTION IS STRONGLY ADVISED. . TRAJECTORY: ASH FROM THE SUMMIT TO FL220 WOULD MOVE TOWARDS THE SOUTHWEST AT 15-20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 15/1500 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. . ORRISON . NNNN