FVXX20 KWBC 300746 VOLCANIC ASH ADVISORY ISSUED: 2002JAN30/0746Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/035 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: PROBABLE VOLCANIC ASH CLOUD AT 30/0700Z. . OBS ASH DATE/TIME: 30/0715 . OBS ASH CLOUD: SFC/FL250 MOVING VARIABLE. ASH HAS NOT BEEN IDENTIFIABLE FROM SATELLITE IMAGERY. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTED A PROBABLE VOLCANIC ASH CLOUD AT 0700Z BETWEEN FL165 AND FL250. UPPER LEVEL WINDS ARE LIGHT AND VARIABLE AROUND SUMMIT LEVEL...BECOMING SOUTHWEST NEAR FL250 AT 20 KNOTS....TURK . NEXT ADVISORY: WILL BE ISSUED BY 2002JAN30/1400Z. . NNNN