WTJP21 RJTD 171200 WARNING 171200. WARNING VALID 181200. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1718 TALIM (1718) 975 HPA AT 34.4N 134.6E SHIKOKU MOVING NORTHEAST 26 KNOTS. POSITION GOOD. MAX WINDS 60 KNOTS. RADIUS OF OVER 50 KNOT WINDS 100 MILES SOUTHEAST SEMICIRCLE AND 70 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 270 MILES. FORECAST POSITION FOR 180000UTC AT 40.7N 139.4E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS. FORECAST POSITION FOR 181200UTC AT 45.8N 142.6E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 60 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=