WTKO20 RKSL 300000 KMA TROPICAL CYCLONE ADVISORY NO. 9 NAME 1821 JEBI ANALYSIS POSITION 300000UTC 17.6N 149.2E MOVEMENT W 13KT PRES/VMAX 960HPA 76KT FORECAST 24HR POSITION 310000UTC 18.2N 144.7E WITHIN 60NM PRES/VMAX 950HPA 84KT 48HR POSITION 010000UTC 20.1N 140.4E WITHIN 90NM PRES/VMAX 935HPA 95KT 72HR POSITION 020000UTC 23.2N 136.9E WITHIN 135NM PRES/VMAX 940HPA 91KT 96HR POSITION 030000UTC 26.2N 135.1E WITHIN 180NM PRES/VMAX 945HPA 87KT 120HR POSITION 040000UTC 29.7N 134.8E WITHIN 245NM PRES/VMAX 950HPA 84KT KOREA METEOROLOGICAL ADMINISTRATION.