WTJP24 RJTD 171800 WARNING 171800. WARNING VALID 181800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1818 RUMBIA (1818) 990 HPA AT 31.7N 116.3E CENTRAL CHINA MOVING WEST 09 KNOTS. POSITION GOOD. MAX WINDS 35 KNOTS. RADIUS OF OVER 30 KNOT WINDS 240 MILES NORTHEAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 180600UTC AT 32.2N 114.8E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA. BECOMING TROPICAL DEPRESSION. FORECAST POSITION FOR 181800UTC AT 32.2N 114.3E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=