FVXX21 KWBC 200700 VOLCANIC ASH ADVISORY ISSUED 0700 UTC 20 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-719 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 AVIATION MODEL. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH WAS DETECTED THROUGH SCATTERED CLOUDS IN SATELLITE IMAGERY THROUGH 20/0615 UTC. A HOT SPOT WAS NOTED IN MULTISPECTRAL IMAGERY EARLIER IN THE EVENING. THE DAILY REPORT FROM THE GEOPHYSICAL INSTITUTE FOR MONDAY INDICATED THAT WHILE THE ACTIVITY REMAINED RELATIVELY LOW FOR MOST OF THE DAY THE VOLCANO REMAINS SEISMICALLY ACTIVE AND COULD PRODUCE ASH AT ANY TIME. . TRAJECTORY: ANY ASH THAT MAY EXIST FROM THE SUMMIT TO FL250 WOULD MOVE TOWARD THE WEST AT 10 TO 15 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 20/1300 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. . KARST . NNNN