WTJP32 RJTD 042100 WARNING 042100. WARNING VALID 052100. TYPHOON WARNING. TYPHOON 1618 CHABA (1618) 955 HPA AT 33.4N 127.3E EAST CHINA SEA MOVING NORTHNORTHEAST 16 KNOTS. POSITION FAIR. MAX WINDS 80 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 050900UTC AT 36.5N 132.8E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 60 KNOTS NEAR CENTER. FORECAST POSITION FOR 052100UTC AT 39.3N 143.5E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 45 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=