WTKO20 RKSL 301200 KMA TROPICAL CYCLONE ADVISORY NO. 1 NAME 1604 NIDA ANALYSIS POSITION 301200UTC 16.1N 124.7E MOVEMENT NW 18KT PRES/VMAX 996HPA 39KT FORECAST 24HR POSITION 311200UTC 19.5N 121.4E WITHIN 75NM PRES/VMAX 985HPA 52KT 48HR POSITION 011200UTC 21.7N 116.2E WITHIN 125NM PRES/VMAX 970HPA 68KT 72HR POSITION 021200UTC 23.4N 110.5E WITHIN 175NM PRES/VMAX 990HPA 47KT 96HR POSITION 031200UTC 24.2N 105.9E WITHIN 0NM PRES 998HPA KOREA METEOROLOGICAL ADMINISTRATION.