WTJP21 RJTD 140000 WARNING 140000. WARNING VALID 150000. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 2505 NARI (2505) 985 HPA AT 34.0N 141.7E SEA EAST OF JAPAN MOVING NORTH 18 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 270 MILES EAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 141200UTC AT 39.1N 142.5E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 150000UTC AT 44.7N 144.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 35 KNOTS. EXTENDED OUTLOOK. FORECAST POSITION FOR 160000UTC AT 48.8N 161.6E WITH 100 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1004 HPA. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=