WTJP33 RJTD 081500 WARNING 081500. WARNING VALID 091500. TYPHOON WARNING. TYPHOON 1511 NANGKA (1511) 935 HPA AT 16.4N 148.5E MARIANAS MOVING NORTHWEST 12 KNOTS. POSITION GOOD. MAX WINDS 90 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 80 MILES. RADIUS OF OVER 30 KNOT WINDS 240 MILES SOUTHEAST SEMICIRCLE AND 180 MILES ELSEWHERE. FORECAST POSITION FOR 090300UTC AT 17.1N 146.6E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 935 HPA, MAX WINDS 90 KNOTS NEAR CENTER. FORECAST POSITION FOR 091500UTC AT 17.7N 144.7E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 930 HPA, MAX WINDS 95 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=