WTJP31 RJTD 221500 WARNING 221500. WARNING VALID 231500. STORM WARNING. TROPICAL STORM 1610 LIONROCK (1610) 990 HPA AT 28.6N 134.1E SEA SOUTH OF JAPAN ALMOST STATIONARY. POSITION FAIR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTHEAST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 231500UTC AT 27.8N 133.9E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=