WTKO20 RKSL 051200 KMA TROPICAL CYCLONE ADVISORY NO. 11 NAME 1813 SHANSHAN ANALYSIS POSITION 051200UTC 24.8N 147.3E MOVEMENT N 9KT PRES/VMAX 970HPA 68KT FORECAST 24HR POSITION 061200UTC 28.8N 144.7E WITHIN 60NM PRES/VMAX 960HPA 76KT 48HR POSITION 071200UTC 31.6N 142.6E WITHIN 90NM PRES/VMAX 965HPA 72KT 72HR POSITION 081200UTC 34.4N 140.7E WITHIN 135NM PRES/VMAX 970HPA 68KT 96HR POSITION 091200UTC 37.3N 141.7E WITHIN 180NM PRES/VMAX 985HPA 52KT 120HR POSITION 101200UTC 40.3N 148.2E WITHIN 245NM PRES/VMAX 992HPA 45KT KOREA METEOROLOGICAL ADMINISTRATION.