WTJP32 RJTD 050900 WARNING 050900. WARNING VALID 060900. STORM WARNING. TROPICAL STORM 1523 CHOI-WAN (1523) 970 HPA AT 22.2N 153.6E SEA AROUND OF MINAMITORISIMA MOVING WESTNORTHWEST 09 KNOTS. POSITION FAIR. MAX WINDS 45 KNOTS. RADIUS OF OVER 30 KNOT WINDS 425 MILES NORTH SEMICIRCLE AND 325 MILES ELSEWHERE. FORECAST POSITION FOR 052100UTC AT 23.2N 151.6E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 060900UTC AT 24.9N 150.6E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=