FVXX21 KWBC 131305 VOLCANIC ASH ADVISORY ISSUED: 2001SEP13/1305Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/233 . INFORMATION SOURCE: GOES-8 VISIBLE/INFRARED/MULTISPECTRAL IMAGERY. GUAYAQUIL MWO. . ERUPTION DETAILS: AIRCRAFT REPORT OF ASH AT 13/1248Z. . DETAILS OF ASH CLOUD: AN AIRCRAFT IS REPORTING AN ASH CLOUD REACHING FL250 NEAR THE SUMMIT. GOES-8 VISIBLE IMAGERY THROUGH 13/1245Z DOES SUGGEST A POSSIBLE ASH PLUME MOVING WEST FROM THE SUMMIT. . TRAJECTORY: ANY ASH TO FL250 IS EXPECTED TO MOVE TO THE WEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 13/1900Z. . 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. . ORRISON . NNNN