WTJP21 RJTD 120600 WARNING 120600. WARNING VALID 130600. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1702 MERBOK (1702) 998 HPA AT 21.2N 114.5E SOUTH CHINA SEA MOVING NORTHNORTHWEST 12 KNOTS. POSITION FAIR. MAX WINDS 40 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 90 MILES. FORECAST POSITION FOR 121800UTC AT 22.9N 114.4E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 130600UTC AT 24.7N 114.5E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1004 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=