WTJP32 RJTD 172100 WARNING 172100. WARNING VALID 182100. TYPHOON WARNING. TYPHOON 1507 DOLPHIN (1507) 925 HPA AT 20.4N 138.6E SEA SOUTH OF JAPAN MOVING NORTH 07 KNOTS. POSITION GOOD. MAX WINDS 100 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 80 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES NORTHEAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 180900UTC AT 21.8N 138.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 182100UTC AT 23.1N 139.5E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 930 HPA, MAX WINDS 95 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=