WTJP22 RJTD 171200 WARNING 171200. WARNING VALID 181200. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1507 DOLPHIN (1507) 925 HPA AT 19.3N 138.6E SEA EAST OF PHILIPPINES 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 180000UTC AT 20.6N 138.5E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 181200UTC AT 22.2N 138.8E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 191200UTC AT 24.7N 140.6E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 935 HPA, MAX WINDS 90 KNOTS NEAR CENTER. FORECAST POSITION FOR 201200UTC AT 29.9N 146.4E WITH 250 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 75 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=