WTJP21 RJTD 180600 WARNING 180600. WARNING VALID 190600. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1718 TALIM (1718) 975 HPA AT 44.3N 142.3E HOKKAIDO MOVING NORTHNORTHEAST 36 KNOTS. POSITION FAIR. MAX WINDS 60 KNOTS. RADIUS OF OVER 50 KNOT WINDS 210 MILES EAST SEMICIRCLE AND 90 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 475 MILES SOUTHEAST SEMICIRCLE AND 210 MILES ELSEWHERE. FORECAST POSITION FOR 181800UTC AT 48.0N 144.5E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 968 HPA, MAX WINDS 60 KNOTS. BECOMING EXTRATROPICAL LOW. FORECAST POSITION FOR 190600UTC AT 51.2N 145.4E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 972 HPA, MAX WINDS 45 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=