WTJP22 RJTD 121800 WARNING 121800. WARNING VALID 131800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 2406 SON-TINH (2406) 1000 HPA AT 34.2N 149.4E SEA EAST OF JAPAN MOVING NORTHNORTHWEST 16 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES EAST SEMICIRCLE AND 60 MILES ELSEWHERE. FORECAST POSITION FOR 130600UTC AT 36.3N 147.1E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER. FORECAST POSITION FOR 131800UTC AT 38.9N 145.6E WITH 42 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1006 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=