FVXX21 KWBC 041330 VOLCANIC ASH ADVISORY ISSUED 1330 UTC 04 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-781 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: DUE TO THICK CLOUD COVER NO ASH HAS BEEN DETECTED IN THE SATELLITE IMAGERY THROUGH 04/1245 UTC. THERE HAVE BEEN NO REPORTS OF MAJOR ASH EMISSIONS. . TRAJECTORY: ANY ASH THAT MAY EXIST BETWEEN THE SUMMIT AND FL250 WILL MOVE TO THE WEST..WEST-SOUTHWEST AT 10-20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 04/1930 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORIES 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