WTJP32 RJTD 130900 WARNING 130900. WARNING VALID 140900. STORM WARNING. SEVERE TROPICAL STORM 1815 LEEPI (1815) 996 HPA AT 26.7N 138.4E SEA SOUTH OF JAPAN MOVING NORTHWEST 12 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES NORTHEAST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 132100UTC AT 28.8N 135.6E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 140900UTC AT 30.8N 131.6E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 45 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=