WTJP23 RJTD 041800 WARNING 041800. WARNING VALID 051800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 2311 HAIKUI (2311) 996 HPA AT 23.5N 117.3E TAIWAN STRAIT MOVING WEST 09 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 210 MILES NORTH SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 050600UTC AT 23.6N 116.1E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA. BECOMING TROPICAL DEPRESSION. FORECAST POSITION FOR 051800UTC AT 23.6N 115.4E WITH 57 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1002 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=