FVXX21 KWBC 061200 VOLCANIC ASH ADVISORY ISSUED 1145 UTC 06 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-789 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. SIX HOUR WIND FORECAST FROM THE 06/0600 UTC AVIATION MODEL. JULY 5 GEOPHYSICAL INSTITUTE REPORT. SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH IS SEEN IN SATELLITE IMAGERY THROUGH 06/1115 UTC POSSIBLY BECAUSE OF THE LOW LEVEL WEATHER CLOUDS IN THE AREA. HOWEVER AT 05/2302 UTC THE GEOPHYSICAL INSTITUTE REPORTED VOLCANIC ASH OVER THE VOLCANO. THE ASH WAS TO FL225 AND MOVING TOWARDS THE WEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL225 WOULD MOVE TOWARD THE WEST AT LESS THAN 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 06/1800 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