WTJP33 RJTD 120900 WARNING 120900. WARNING VALID 130900. TYPHOON WARNING. TYPHOON 1511 NANGKA (1511) 950 HPA AT 18.7N 137.5E SEA EAST OF PHILIPPINES MOVING NORTHWEST SLOWLY. POSITION GOOD. MAX WINDS 80 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 90 MILES. RADIUS OF OVER 30 KNOT WINDS 300 MILES. FORECAST POSITION FOR 130900UTC AT 20.8N 137.3E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 935 HPA, MAX WINDS 90 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=