FVXX21 KWBC 200720 VOLCANIC ASH ADVISORY ISSUED: 2001SEP20/0720 VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/262 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. SIX HOUR WIND FORECAST FROM THE 20/0000Z AVIATION MODEL. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS TO FL200. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 20/0645Z SHOWS NO ASH VISIBLE AT THIS TIME. THE LAST REPORT OF ASH WAS AT 19/1415Z TO FL200. . TRAJECTORY: ANY ASH AT FL200 WILL MOVE WESTWARD AT 10 TO 15 KNOTS . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 20/1330Z . 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