FVXX21 KWBC 191930 VOLCANIC ASH ADVISORY ISSUED: 2001SEP19/1930 VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/260 . INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. UPPER AIR WIND FORECAST FROM THE 12Z AVIATION MODEL. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS TO FL200. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 1845Z SHOWS POSSIBLE INDICATIONS OF ASH NEAR OR JUST WEST OF THE SUMMIT ALTHOUGH THERE ARE EXTENSIVE CLOUDS PRESENT. THE GUAYAQUIL MWO REPORTS THAT LOCAL AIRCRAFT AND SURFACE OBSERVATIONS INDICATE THE ASH IS AT FL200. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ASH AT FL200 WOULD MOVE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 20/0130Z . 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