WTJP22 RJTD 161200 WARNING 161200. WARNING VALID 171200. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1507 DOLPHIN (1507) 925 HPA AT 16.5N 140.7E MARIANAS MOVING NORTHWEST 10 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 170000UTC AT 18.0N 139.2E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 920 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 171200UTC AT 19.5N 138.7E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 915 HPA, MAX WINDS 105 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 181200UTC AT 22.2N 139.2E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 920 HPA, MAX WINDS 100 KNOTS NEAR CENTER. FORECAST POSITION FOR 191200UTC AT 25.1N 141.3E WITH 220 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 930 HPA, MAX WINDS 95 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=