FVXX21 KWBC 081730 VOLCANIC ASH ADVISORY ISSUED 1730 UTC 08 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-798 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 AVIATION MODEL. . ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: DUE TO SCATTERED LOW AND MID LEVEL CLOUDINESS AROUND THE VOLCANO NO PLUME WAS NOTED IN IMAGERY THROUGH 08/1645 UTC. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL180 IS FORECAST TO MOVE TOWARD THE WEST SOUTHWEST AROUND 15 KNOTS AND FROM AROUND FL220 ASH WOULD MOVE NORTHWEST AROUND UP TO 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 08/2330 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