FVXX21 KWBC 060440 VOLCANIC ASH ADVISORY ISSUED: 2001SEP06/0440Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/218 . INFORMATION SOURCE: GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET. AVIATION MODEL FORECAST WINDS. . ERUPTION DETAILS: ASH CLOUD OBSERVED AT 0404Z. . DETAILS OF ASH CLOUD: A SIGMET INDICATES THAT THE GEOPHYSICAL INSTITUTE OBSERVED ASH OVER THE VOLCANO TO FL230 AT 0404Z. GOES-8 IMAGERY HAS NOT BEEN AVAILABLE SINCE 0345Z DUE TO A SCHEDULED OUTAGE. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL230 WOULD MOVE WEST AT ABOUT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 06/1030Z. . 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