WTKO20 RKSL 290600 KMA TROPICAL CYCLONE ADVISORY NO. 6 NAME 1821 JEBI ANALYSIS POSITION 290600UTC 17.1N 152.6E MOVEMENT W 9KT PRES/VMAX 980HPA 56KT FORECAST 24HR POSITION 300600UTC 17.8N 148.4E WITHIN 60NM PRES/VMAX 960HPA 76KT 48HR POSITION 310600UTC 18.6N 144.0E WITHIN 90NM PRES/VMAX 950HPA 84KT 72HR POSITION 010600UTC 20.7N 139.6E WITHIN 135NM PRES/VMAX 940HPA 91KT 96HR POSITION 020600UTC 23.2N 137.2E WITHIN 180NM PRES/VMAX 935HPA 95KT 120HR POSITION 030600UTC 26.4N 135.9E WITHIN 245NM PRES/VMAX 940HPA 91KT KOREA METEOROLOGICAL ADMINISTRATION.