FVXX21 KWBC 241650 VOLCANIC ASH ADVISORY ISSUED 1650 UTC 24 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-737 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. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 24/1615 UTC SHOWS CLOUDINESS IN THE AREA AROUND THE VOLCANO MAKING ASH DETECTION DIFFICULT. THE GEOPHYSICAL INSTITUTE LAST REPORTED PROBABLE ASH OVER THE VOLCANO AT 24/0647 UTC. THIS ASH WAS ESTIMATED NEAR SUMMIT LEVEL. . TRAJECTORY: ANY ASH NEAR SUMMIT LEVEL WILL MOVE TOWARDS THE WEST AND NORTHWEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 24/2300 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. . BROWN . NNNN