FVXX21 KWBC 232300 VOLCANIC ASH ADVISORY ISSUED 2300 UTC 23 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-734 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: THE GEOPHYSICAL INSTITUTE REPORTED PROBABLE VOLCANIC ASH OVER THE VOLCANO AT 2009 UTC. PREVIOUS INFORMATION PLACED THE HEIGHT AT FL210. EXTENSIVE CLOUDINESS IN THE VICINITY OF THE VOLCANO IS MAKING ASH DETECTION DIFFICULT IN SATELLITE IMAGERY THROUGH 2215 UTC. . TRAJECTORY: TOWARDS THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 24/0500 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