WTJP32 RJTD 140900 WARNING 140900. WARNING VALID 150900. STORM WARNING. SEVERE TROPICAL STORM 1815 LEEPI (1815) 994 HPA AT 30.9N 134.0E SEA SOUTH OF JAPAN MOVING NORTHWEST 13 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES EAST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 142100UTC AT 33.0N 130.7E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 150900UTC AT 34.8N 128.5E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 40 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=