FVXX21 KWBC 122200 VOLCANIC ASH ADVISORY ISSUED 2200 UTC 12 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-689 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. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 12/2115 UTC BUT ASH DETECTION CONTINUES TO BE HINDERED BY LOW LEVEL CLOUDS OVER THE AREA. THE LATEST REPORT FROM THE GEOPHYSICAL INSTITUTE AT 12/2003 UTC INDICATED VOLCANIC ASH OVER THE VOLCANO AT FL260 MOVING WEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL260 WOULD MOVE TOWARD THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 13/0400 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