WTJP31 RJTD 220900 WARNING 220900. WARNING VALID 230900. STORM WARNING. TROPICAL STORM 1610 LIONROCK (1610) 990 HPA AT 28.6N 133.6E SEA SOUTH OF JAPAN ALMOST STATIONARY. POSITION FAIR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES. FORECAST POSITION FOR 230900UTC AT 28.1N 132.9E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=