WTJP22 RJTD 241800 WARNING 241800. WARNING VALID 251800. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. SEVERE TROPICAL STORM 2631 IN-FA (2631) 996 HPA AT 11.2N 165.4E MARSHALLS MOVING NORTHWEST 09 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHWEST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 251800UTC AT 13.4N 164.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 65 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 261800UTC AT 14.6N 165.2E WITH 115 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 271800UTC AT 14.7N 164.6E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 80 KNOTS NEAR CENTER. FORECAST POSITION FOR 281800UTC AT 15.3N 160.2E WITH 200 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 85 KNOTS NEAR CENTER. FORECAST POSITION FOR 291800UTC AT 16.5N 153.4E WITH 250 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 950 HPA, MAX WINDS 90 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=