WTJP33 RJTD 220900 WARNING 220900. WARNING VALID 230900. STORM WARNING. SEVERE TROPICAL STORM 1609 MINDULLE (1609) 985 HPA AT 36.6N 140.3E HONSHU MOVING NORTHNORTHEAST 19 KNOTS. POSITION GOOD. MAX WINDS 55 KNOTS. RADIUS OF OVER 50 KNOT WINDS 50 MILES SOUTHEAST SEMICIRCLE AND 40 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 130 MILES SOUTHEAST SEMICIRCLE AND 75 MILES ELSEWHERE. FORECAST POSITION FOR 222100UTC AT 41.5N 142.7E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS. FORECAST POSITION FOR 230900UTC AT 49.0N 146.6E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 986 HPA, MAX WINDS 50 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=