WTKO20 RKSL 310000 KMA TROPICAL CYCLONE ADVISORY NO. 13 NAME 1821 JEBI ANALYSIS POSITION 310000UTC 17.9N 144.2E MOVEMENT W 11KT PRES/VMAX 925HPA 99KT FORECAST 24HR POSITION 010000UTC 20.2N 139.9E WITHIN 60NM PRES/VMAX 920HPA 103KT 48HR POSITION 020000UTC 23.0N 136.5E WITHIN 90NM PRES/VMAX 920HPA 103KT 72HR POSITION 030000UTC 26.6N 134.5E WITHIN 135NM PRES/VMAX 930HPA 97KT 96HR POSITION 040000UTC 30.9N 134.4E WITHIN 180NM PRES/VMAX 940HPA 91KT 120HR POSITION 050000UTC 35.8N 136.7E WITHIN 245NM PRES/VMAX 960HPA 76KT KOREA METEOROLOGICAL ADMINISTRATION.