WTJP32 RJTD 040900 WARNING 040900. WARNING VALID 050900. TYPHOON WARNING. TYPHOON 1618 CHABA (1618) 925 HPA AT 30.2N 125.9E EAST CHINA SEA MOVING NORTH 17 KNOTS. POSITION FAIR. MAX WINDS 100 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 50 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 042100UTC AT 33.3N 126.7E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 950 HPA, MAX WINDS 85 KNOTS NEAR CENTER. FORECAST POSITION FOR 050900UTC AT 36.5N 132.2E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 65 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=