WTJP21 RJTD 230600 WARNING 230600. WARNING VALID 240600. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. SEVERE TROPICAL STORM 1610 LIONROCK (1610) 980 HPA AT 27.4N 134.1E 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 240600UTC AT 26.5N 133.9E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 65 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 250600UTC AT 25.7N 133.1E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 80 KNOTS NEAR CENTER. FORECAST POSITION FOR 260600UTC AT 25.4N 132.2E WITH 170 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 80 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=