WTJP31 RJTD 200900 WARNING 200900. WARNING VALID 210900. STORM WARNING. SEVERE TROPICAL STORM 1512 HALOLA (1512) 990 HPA AT 21.7N 146.8E OGASAWARA SHOTO MOVING WESTNORTHWEST 10 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES EAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 202100UTC AT 22.0N 144.6E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 210900UTC AT 22.6N 142.2E WITH 75 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=