WTJP22 RJTD 040000 WARNING 040000. WARNING VALID 050000. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1618 CHABA (1618) 915 HPA AT 27.8N 126.3E EAST CHINA SEA MOVING NORTH 11 KNOTS. POSITION GOOD. MAX WINDS 105 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 50 MILES. RADIUS OF OVER 30 KNOT WINDS 150 MILES NORTHEAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 041200UTC AT 31.0N 126.1E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 050000UTC AT 34.2N 127.9E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 80 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 060000UTC AT 39.0N 145.0E WITH 150 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 45 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=