FVXX21 KWBC 221930 VOLCANIC ASH ADVISORY ISSUED 1930 UTC 22 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-729 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. 6 HOUR WIND FORECAST FROM THE 22/1200 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 22/1845 UTC SHOWS AN EXTENSIVE AREA OF BROKEN CLOUDS OVER THE AREA. THIS MAKES ASH DETECTION VERY DIFFICULT. ASH WAS LAST OBSERVED AT 21/1908 UTC AND WAS REPORTED NEAR THE SUMMIT TO FL230. . TRAJECTORY: ANY ASH THAT MAY EXIST BETWEEN THE SUMMIT AND FL230 WOULD MOVE TO THE WEST AROUND 20 TO 30 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 23/0130 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