FVXX20 KWBC 050615 VOLCANIC ASH ADVISORY ISSUED: 2002FEB05/0615Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/046 . INFORMATION SOURCE: GOES-8 IMAGERY. NWS NUMERICAL MODEL WINDS. SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: ASH OBSERVED AT 05/0523Z . OBS ASH DATE/TIME: 05/0523Z . OBS ASH CLOUD: SFC/FL230 MOVING W 10 KNOTS ASH NOT IDENTIFIABLE FROM SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: SIGMET INDICATES THAT GEOPHYSICAL INSTITUTE OBSERVED ASH FL160/230 AT 0523Z. ASH IS NOT SEEN IN SATELLITE IMAGERY THROUGH 0515Z BUT IF LATER IMAGES SHOW THE ASH A NEW VAA WILL BE ISSUED AS SOON AS POSSIBLE...OTHERWISE IT WILL BE ISSUED IN 6 HOURS. CLOUD COVER MIGHT BE OBSCURING ASH. . NEXT ADVISORY: WILL BE ISSUED BY 2002FEB05/1215Z. . NNNN