WTJP32 RJTD 250300 WARNING 250300. WARNING VALID 260300. STORM WARNING. SEVERE TROPICAL STORM 1516 ATSANI (1516) 970 HPA AT 36.7N 156.7E FAR OFF EAST OF JAPAN MOVING NORTHEAST 35 KNOTS. POSITION FAIR. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 150 MILES SOUTHEAST SEMICIRCLE AND 70 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 375 MILES. FORECAST POSITION FOR 251500UTC AT 38.5N 159.8E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 260300UTC AT 39.5N 162.5E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=