FVXX21 KWBC 281625 VOLCANIC ASH ADVISORY ISSUED 1625 UTC 28 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-756 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. THE GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 28/1545 UTC DOES NOT INDICATE ANY SIGNS OF ASH. THE LAST REPORT OF ASH WAS RECEIVED BY THE GEOPHYSICAL INSTITUTE WITH A REPORT OF ASH OVER THE SUMMIT AT AT 0327 UTC. THERE ARE NO OTHER REPORTS OF ASH AT THIS TIME. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL350 WOULD MOVE WEST AT 10 TO 20 KNOTS. SHOULD ANYTHING EVER GET HIGHER THAN THIS THEN IT WOULD MOVE EAST AT SIMILAR SPEEDS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 28/2230 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. . ORRISON . NNNN