WTJP31 RJTD 260900 WARNING 260900. WARNING VALID 270900. TYPHOON WARNING. TYPHOON 1521 DUJUAN (1521) 955 HPA AT 21.9N 129.3E SEA SOUTH OF OKINAWA MOVING NORTHWEST 10 KNOTS. POSITION GOOD. MAX WINDS 75 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 70 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES. FORECAST POSITION FOR 262100UTC AT 22.5N 127.9E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 945 HPA, MAX WINDS 85 KNOTS NEAR CENTER. FORECAST POSITION FOR 270900UTC AT 22.9N 126.5E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 940 HPA, MAX WINDS 85 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=