WTJP21 RJTD 210600 WARNING 210600. WARNING VALID 220600. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. TROPICAL STORM 1610 LIONROCK (1610) 992 HPA AT 29.5N 133.7E SEA SOUTH OF JAPAN MOVING SOUTHWEST 08 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 220600UTC AT 28.9N 133.2E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 230600UTC AT 28.3N 133.1E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 240600UTC AT 27.3N 132.0E WITH 170 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 70 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=