WTJP21 RJTD 131800 WARNING 131800. WARNING VALID 141800. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 2511 PODUL (2511) 990 HPA AT 24.1N 116.9E SOUTH CHINA MOVING WESTNORTHWEST 15 KNOTS. POSITION GOOD. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 210 MILES EAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 140600UTC AT 25.8N 113.8E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA. BECOMING TROPICAL DEPRESSION. FORECAST POSITION FOR 141800UTC AT 26.7N 110.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=