FVXX21 KWBC 160100 VOLCANIC ASH ADVISORY ISSUED 0100 UTC 16 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-702 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE REPORT. FORECAST UPPER WINDS FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SCATTERED CLOUDS HAVE OBSCURED THE VIEW OF THE VOLCANO AND NO ASH HAS BEEN DETECTED IN SATELLITE IMAGERY THROUGH 16/0015 UTC. THE INSTITUTE REPORTS THAT THE VOLCANO HAS BEEN VERY QUIET HOWEVER REMAINS IN A VERY ACTIVE STATE AND COULD PRODUCE SIGNIFICANT ASH AT ANYTIME. . TRAJECTORY: UPPER WIND PATTERNS SUGGEST ANY ASH FROM THE SUMMIT TO FL230 WOULD MOVE WESTERLY AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 16/0700 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