WTJP23 RJTD 120000 WARNING 120000. WARNING VALID 130000. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1511 NANGKA (1511) 950 HPA AT 18.4N 137.7E SEA EAST OF PHILIPPINES MOVING WEST SLOWLY. POSITION GOOD. MAX WINDS 80 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 80 MILES. RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210 MILES ELSEWHERE. FORECAST POSITION FOR 130000UTC AT 19.7N 137.7E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 935 HPA, MAX WINDS 90 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 140000UTC AT 22.5N 137.7E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 930 HPA, MAX WINDS 95 KNOTS NEAR CENTER. FORECAST POSITION FOR 150000UTC AT 26.5N 136.5E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=