FVXX21 KWBC 151630 VOLCANIC ASH ADVISORY ISSUED 1630 UTC 15 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-825 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE REPORT. WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTS OCCASIONAL ASH EMISSIONS TO 200 METERS ABOVE THE SUMMIT. SATELLITE IMAGERY THROUGH 15/1545 UTC SHOWS LOW AND MID LEVEL CLOUDS OVER THE VOLCANO MAKING IT DIFFICULT TO DETECT ANY ASH. . TRAJECTORY: ASH FROM THE SUMMIT TO FL180 WILL MOVE TOWARDS THE WEST AT 15-20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 15/2230 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