FVXX21 KWBC 031330 VOLCANIC ASH ADVISORY ISSUED 1330 UTC 03 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-777 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: EXTENSIVE LOW AND MID LEVEL CLOUDS COVER THE VOLCANO MAKING IT DIFFICULT TO DISCERN ASH IN SATELLITE IMAGERY THROUGH 1245 UTC. THE GEOPHYSICAL INSTITUTE LAST REPORTED ASH OVER THE VOLCANO TO FL220 AT 03/0815 UTC. . TRAJECTORY: ANY ASH THAT MAY EXIST BETWEEN THE SUMMIT AND FL220 IS FORECAST TO MOVE TOWARDS THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 03/1930 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. . CLARK . NNNN