WTKO20 RKSL 011200 KMA TROPICAL CYCLONE ADVISORY NO. 30 NAME 1803 JELAWAT ANALYSIS POSITION 011200UTC 20.3N 146.6E MOVEMENT NE 8KT PRES/VMAX 998HPA 37KT FORECAST 24HR POSITION 021200UTC 20.4N 149.7E WITHIN 0NM PRES 1002HPA KOREA METEOROLOGICAL ADMINISTRATION.