WTJP31 RJTD 290900 WARNING 290900. WARNING VALID 300900. STORM WARNING. SEVERE TROPICAL STORM 2527 KOTO (2527) 990 HPA AT 13.5N 111.9E SOUTH CHINA SEA MOVING WESTSOUTHWEST SLOWLY. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 210 MILES WEST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 300900UTC AT 14.4N 112.2E WITH 42 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=