FVXX21 KWBC 100430 VOLCANIC ASH ADVISORY ISSUED 0430 UTC 10 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-678 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. MARCH 9 REPORT FROM THE GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 10/0345 UTC. HOWEVER THE PRESENCE OF LOW CLOUDS IN THE AREA MIGHT BE HINDERING ASH DETECTION. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT IF THERE IS ANY ASH BETWEEN THE SUMMIT AND FL300 IT WOULD MOVE TOWARD THE WEST AT ABOUT 10 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 10/1030 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