FVXX21 KWBC 201615 VOLCANIC ASH ADVISORY ISSUED: 2001SEP20/1615 VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/264 . INFORMATION SOURCE: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: ASH REPORTED OVER VOLCANO AT 20/1544Z. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTS ASH OVER THE SUMMIT AS OF 20/1544Z. IT IS ESTIMATED TO BE REACHING FL230. SATELLITE IMAGERY THROUGH 20/1545Z SHOWS NO SIGNS OF ASH. THERE ARE CLOUDS IN THE VICINITY OF THE SUMMIT WHICH MAY BE OBSCURING ANY POSSIBLE ASH. . TRAJECTORY: WEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 20/2200Z. . 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