WTJP23 RJTD 151200 WARNING 151200. WARNING VALID 161200. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1816 BEBINCA (1816) 990 HPA AT 20.8N 110.7E SOUTH CHINA SEA MOVING WEST 06 KNOTS. POSITION FAIR. MAX WINDS 40 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTH SEMICIRCLE AND 60 MILES ELSEWHERE. FORECAST POSITION FOR 161200UTC AT 20.4N 109.0E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 40 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 171200UTC AT 20.2N 106.9E WITH 95 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 181200UTC AT 21.2N 105.3E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=