WTJP31 RJTD 260300 WARNING 260300. WARNING VALID 270300. TYPHOON WARNING. TYPHOON 1521 DUJUAN (1521) 960 HPA AT 21.2N 130.0E SEA SOUTH OF JAPAN MOVING NORTHWEST 08 KNOTS. POSITION GOOD. MAX WINDS 75 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 70 MILES. RADIUS OF OVER 30 KNOT WINDS 180 MILES. FORECAST POSITION FOR 270300UTC AT 22.5N 127.3E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 945 HPA, MAX WINDS 85 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=