WTJP21 RJTD 181200 WARNING 181200. WARNING VALID 191200. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1501 MEKKHALA (1501) 1000 HPA AT 14.9N 122.6E PHILIPPINES MOVING NORTHWEST 09 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES NORTH SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 190000UTC AT 15.4N 122.0E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER. FORECAST POSITION FOR 191200UTC AT 16.2N 121.4E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1002 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=