FVXX21 KWBC 132335 VOLCANIC ASH ADVISORY ISSUED: 2001SEP13/2335Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/236 . INFORMATION SOURCE: GOES-8 VISIBLE/INFRARED/MULTISPECTRAL IMAGERY. GUAYAQUIL MWO. 14/0000Z UPPER AIR FORECAST WINDS FROM THE 13/1800Z AVIATION MODEL. INSITUTO GEOFISICO. . ERUPTION DETAILS: INSITUTO GEOFISICO REPORT 13/2206Z . DETAILS OF ASH CLOUD: ASH CANNOT BE SEEN ON GOES-8 IMAGERY THROUGH 2315Z. EXTENSIVE CLOUDS ARE OBSCURING THE VOLCANO. THE INSTITUTE REPORTS VOLCANIC ASH OVER THE VOLCANO TO FL230 MOVING WEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGESTS ASH AT OR NEAR SUMMIT LEVEL TO FL230 WOULD MOVE WEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 14/0530Z. . 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