WTJP22 RJTD 181800 WARNING 181800. WARNING VALID 191800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1608 DIANMU (1608) 985 HPA AT 19.9N 107.9E GULF OF TONGKING MOVING WEST 12 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 240 MILES. FORECAST POSITION FOR 190600UTC AT 20.2N 106.4E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 191800UTC AT 21.0N 103.8E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=