WTJP24 RJTD 170600 WARNING 170600. WARNING VALID 180600. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1818 RUMBIA (1818) 985 HPA AT 31.5N 118.8E CENTRAL CHINA MOVING WESTNORTHWEST 14 KNOTS. POSITION GOOD. MAX WINDS 45 KNOTS. RADIUS OF OVER 30 KNOT WINDS 240 MILES NORTHEAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 171800UTC AT 32.0N 115.9E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 35 KNOTS. FORECAST POSITION FOR 180600UTC AT 32.5N 114.6E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=