WTJP21 RJTD 260600 WARNING 260600. WARNING VALID 270600. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1603 MIRINAE (1603) UPGRADED FROM TROPICAL DEPRESSION 1000 HPA AT 18.5N 112.2E SOUTH CHINA SEA MOVING WESTNORTHWEST 10 KNOTS. POSITION GOOD. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 90 MILES. FORECAST POSITION FOR 261800UTC AT 19.3N 110.5E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 270600UTC AT 19.8N 108.8E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 40 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 280600UTC AT 21.9N 106.1E WITH 95 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER. FORECAST POSITION FOR 290600UTC AT 22.9N 105.0E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1002 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=