WTJP31 RJTD 080900 WARNING 080900. WARNING VALID 090900. STORM WARNING. TROPICAL STORM 1502 HIGOS (1502) 990 HPA AT 12.3N 157.0E MARSHALLS MOVING NORTHWEST SLOWLY. POSITION FAIR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 210 MILES NORTH SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 090900UTC AT 13.1N 156.0E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=