WTJP31 RJTD 162100 WARNING 162100. WARNING VALID 172100. STORM WARNING. SEVERE TROPICAL STORM 1819 SOULIK (1819) 990 HPA AT 20.7N 141.2E OGASAWARA SHOTO MOVING NORTH 15 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 270 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 170900UTC AT 23.1N 140.3E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 172100UTC AT 24.1N 139.9E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=