WTJP21 RJTD 051800 WARNING 051800. WARNING VALID 061800. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 2627 CHOI-WAN (2627) 950 HPA AT 28.3N 145.6E OGASAWARA SHOTO MOVING NORTH 10 KNOTS. POSITION GOOD. MAX WINDS 80 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 150 MILES EAST SEMICIRCLE AND 90 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 450 MILES EAST SEMICIRCLE AND 300 MILES ELSEWHERE. FORECAST POSITION FOR 060600UTC AT 31.6N 146.4E WITH 25 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 061800UTC AT 36.2N 149.5E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 70 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 071800UTC AT 49.8N 167.6E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 55 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=