WTJP31 RJTD 270900 WARNING 270900. WARNING VALID 280900. TYPHOON WARNING. TYPHOON 1521 DUJUAN (1521) 925 HPA AT 22.6N 126.4E SEA SOUTH OF OKINAWA MOVING WEST 08 KNOTS. POSITION GOOD. MAX WINDS 100 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 80 MILES. RADIUS OF OVER 30 KNOT WINDS 270 MILES. FORECAST POSITION FOR 272100UTC AT 23.3N 124.4E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 280900UTC AT 24.3N 122.3E WITH 75 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=