WTJP22 RJTD 040000 WARNING 040000. WARNING VALID 050000. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1510 LINFA (1510) 985 HPA AT 15.3N 124.2E SEA EAST OF PHILIPPINES MOVING NORTHWEST SLOWLY. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTH SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 050000UTC AT 17.5N 122.4E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 060000UTC AT 19.1N 121.2E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. FORECAST POSITION FOR 070000UTC AT 20.3N 121.4E WITH 220 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=