WTKO20 RKSL 090000 KMA TROPICAL CYCLONE ADVISORY NO. 4 NAME 1814 YAGI ANALYSIS POSITION 090000UTC 20.8N 133.7E MOVEMENT NW 10KT PRES/VMAX 994HPA 35KT FORECAST 24HR POSITION 100000UTC 23.6N 133.1E WITHIN 60NM PRES/VMAX 994HPA 35KT 48HR POSITION 110000UTC 26.3N 130.5E WITHIN 90NM PRES/VMAX 994HPA 37KT 72HR POSITION 120000UTC 29.2N 126.7E WITHIN 135NM PRES/VMAX 992HPA 37KT 96HR POSITION 130000UTC 33.1N 122.8E WITHIN 180NM PRES/VMAX 990HPA 39KT 120HR POSITION 140000UTC 36.5N 121.7E WITHIN 245NM PRES/VMAX 990HPA 39KT KOREA METEOROLOGICAL ADMINISTRATION.