WTKO20 RKSL 010600 KMA TROPICAL CYCLONE ADVISORY NO. 18 NAME 1821 JEBI ANALYSIS POSITION 010600UTC 20.4N 138.3E MOVEMENT NW 12KT PRES/VMAX 915HPA 107KT FORECAST 24HR POSITION 020600UTC 23.6N 135.1E WITHIN 60NM PRES/VMAX 920HPA 103KT 48HR POSITION 030600UTC 27.8N 133.6E WITHIN 90NM PRES/VMAX 935HPA 95KT 72HR POSITION 040600UTC 34.0N 135.8E WITHIN 135NM PRES/VMAX 955HPA 78KT 96HR POSITION 050600UTC 44.5N 140.5E WITHIN 180NM PRES/VMAX 975HPA 62KT 120HR POSITION 060600UTC 54.0N 138.9E WITHIN 0NM PRES/VMAX 990HPA 47KT KOREA METEOROLOGICAL ADMINISTRATION.