WTJP31 RJTD 141500 WARNING 141500. WARNING VALID 151500. STORM WARNING. TROPICAL STORM 1503 BAVI (1503) 990 HPA AT 13.8N 150.5E TRUKS MOVING WESTNORTHWEST 20 KNOTS. POSITION POOR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHWEST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 150300UTC AT 13.9N 147.5E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 151500UTC AT 13.6N 144.2E WITH 75 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=