WTJP32 RJTD 140300 WARNING 140300. WARNING VALID 150300. STORM WARNING. SEVERE TROPICAL STORM 1815 LEEPI (1815) 996 HPA AT 29.6N 135.6E 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 141500UTC AT 31.7N 131.9E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 150300UTC AT 33.7N 128.2E WITH 90 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA, MAX WINDS 40 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=