FVXX20 KWBC 160855 VOLCANIC ASH ADVISORY ISSUED: 2001AUG16/0900Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/17 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GUAYAQUIL SIGMET. GEOPHYSICAL INSTITUTE IN QUITO. AVIATION MODEL UPPER WIND FORECAST. . ERUPTION DETAILS: NEARLY CONTINUOUS ERUPTION SINCE 06/1203Z. . DETAILS OF ASH CLOUD: GOES8 IMAGERY THROUGH 0815Z SHOWS NO DEFINITE ASH PLUME ALTHOUGH THERE ARE POSSIBLE INDICATIONS OF ASH MAINLY TO THE SOUTHWEST OF THE SUMMIT. . TRAJECTORY: ASH BELOW FL280 IS FORECAST TO MOVE MAINLY BETWEEN SOUTHEAST AND SOUTHWEST AROUND 10 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT ADVISORY WILL BE ISSUED BY 16/1500Z. . INTERNET URLS... MESSAGE LISTSERV WWW.SSD.NOAA.GOV/VAAC/SUBSCRIBE.HTML MESSAGES GRAPHICS AND IMAGERY WWW.SSD.NOAA.GOV/VAAC/WASHINGTON.HTML (ALL LOWERCASE EXCEPT /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . . NNNN