FVXX21 KWBC 220730 VOLCANIC ASH ADVISORY ISSUED 0730 UTC 22 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-727 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 22/0645 UTC SHOWS EXTENSIVE CLOUDS OVER THE AREA MAKING ANY ASH DETECTION DIFFICULT. THE GEOPHYSICAL INSTITUTE HAS REPORTED THAT THE ACTIVITY LEVEL OF THE VOLCANO HAS BEEN LOW OVER THE LAST 24 HOURS. 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 22/1330 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. . CLARK . NNNN