WTKO20 RKSL 280600 KMA TROPICAL CYCLONE ADVISORY NO. 13 NAME 1803 JELAWAT ANALYSIS POSITION 280600UTC 13.2N 134.2E MOVEMENT NNW 16KT PRES/VMAX 990HPA 47KT FORECAST 24HR POSITION 290600UTC 15.4N 134.5E WITHIN 75NM PRES/VMAX 985HPA 52KT 48HR POSITION 300600UTC 17.6N 135.9E WITHIN 125NM PRES/VMAX 980HPA 56KT 72HR POSITION 310600UTC 19.3N 138.2E WITHIN 175NM PRES/VMAX 985HPA 52KT 96HR POSITION 010600UTC 20.2N 141.0E WITHIN 250NM PRES/VMAX 992HPA 45KT 120HR POSITION 020600UTC 21.1N 144.4E WITHIN 295NM PRES/VMAX 998HPA 37KT KOREA METEOROLOGICAL ADMINISTRATION.