WTJP31 RJTD 230900 WARNING 230900. WARNING VALID 240900. TYPHOON WARNING. SEVERE TROPICAL STORM 1610 LIONROCK (1610) 975 HPA AT 27.2N 134.0E SEA SOUTH OF JAPAN ALMOST STATIONARY. POSITION FAIR. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 30 MILES. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHEAST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 240900UTC AT 26.4N 133.6E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=