WTJP21 RJTD 210000 WARNING 210000. WARNING VALID 220000. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. TROPICAL STORM 1610 LIONROCK (1610) 994 HPA AT 30.0N 134.4E SEA SOUTH OF JAPAN MOVING WESTSOUTHWEST 07 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES NORTH SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 220000UTC AT 29.2N 133.2E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 230000UTC AT 28.6N 133.1E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 240000UTC AT 27.8N 132.1E WITH 170 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=