WTJP32 RJTD 300300 WARNING 300300. WARNING VALID 010300. TYPHOON WARNING. SEVERE TROPICAL STORM 1618 CHABA (1618) 985 HPA AT 13.3N 137.4E SEA EAST OF PHILIPPINES MOVING WEST 13 KNOTS. POSITION FAIR. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 30 MILES. RADIUS OF OVER 30 KNOT WINDS 150 MILES. FORECAST POSITION FOR 301500UTC AT 15.0N 136.1E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 010300UTC AT 16.8N 134.5E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 75 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=