WTJP32 RJTD 250900 WARNING 250900. WARNING VALID 260900. STORM WARNING. SEVERE TROPICAL STORM 1525 CHAMPI (1525) 975 HPA AT 35.8N 164.7E FAR OFF EAST OF JAPAN MOVING NORTHEAST 45 KNOTS. POSITION FAIR. MAX WINDS 60 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 90 MILES SOUTHEAST SEMICIRCLE AND 70 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTHEAST SEMICIRCLE AND 210 MILES ELSEWHERE. FORECAST POSITION FOR 252100UTC AT 42.1N 172.5E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS. BECOMING EXTRATROPICAL LOW. FORECAST POSITION FOR 260900UTC AT 47.3N 176.1E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=