WTKO20 RKSL 120600 KMA TROPICAL CYCLONE ADVISORY NO. 17 NAME 1814 YAGI ANALYSIS POSITION 120600UTC 26.3N 123.7E MOVEMENT WNW 13KT PRES/VMAX 992HPA 39KT FORECAST 24HR POSITION 130600UTC 31.7N 118.6E WITHIN 60NM PRES/VMAX 996HPA 35KT 48HR POSITION 140600UTC 35.8N 116.4E WITHIN 0NM PRES/VMAX 1000HPA 25KT KOREA METEOROLOGICAL ADMINISTRATION.