WTJP31 RJTD 102100 WARNING 102100. WARNING VALID 112100. STORM WARNING. SEVERE TROPICAL STORM 2422 YINXING (2422) 990 HPA AT 18.7N 112.5E SOUTH CHINA SEA ALMOST STATIONARY. POSITION FAIR. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 30 MILES. RADIUS OF OVER 30 KNOT WINDS 180 MILES NORTH SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 110900UTC AT 16.3N 110.6E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 112100UTC AT 14.8N 109.9E WITH 42 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 40 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=