FVXX21 KWBC 051930 VOLCANIC ASH ADVISORY ISSUED 1930 UTC 05 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-786 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. SIX HOUR WIND FORECAST FROM THE 05/1200 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: ASH IS NOT SEEN ON THE SATELLITE IMAGERY THROUGH 05/1845 UTC ALTHOUGH THERE ARE EXTENSIVE CLOUDS PRESENT. THE GEOPHYSICAL INSTITUTE REPORTS CONSTANT EMISSIONS OF MOSTLY STEAM WITH SOME POSSIBLE ASH TO FL200 OR LESS. . TRAJECTORY: ASH FROM THE SUMMIT TO FL200 WILL MOVE TOWARDS THE WEST-SOUTHWEST AT 10-15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 06/0130 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