WTKO20 RKSL 271800 KMA TROPICAL CYCLONE ADVISORY NO. 11 NAME 1803 JELAWAT ANALYSIS POSITION 271800UTC 11.0N 135.3E MOVEMENT NNW 9KT PRES/VMAX 998HPA 37KT FORECAST 24HR POSITION 281800UTC 14.1N 134.9E WITHIN 75NM PRES/VMAX 992HPA 45KT 48HR POSITION 291800UTC 16.5N 135.1E WITHIN 125NM PRES/VMAX 985HPA 52KT 72HR POSITION 301800UTC 18.3N 136.6E WITHIN 175NM PRES/VMAX 990HPA 47KT 96HR POSITION 311800UTC 19.5N 138.4E WITHIN 250NM PRES/VMAX 992HPA 45KT 120HR POSITION 011800UTC 20.3N 140.5E WITHIN 295NM PRES/VMAX 998HPA 37KT KOREA METEOROLOGICAL ADMINISTRATION.