WTJP22 RJTD 250600 WARNING 250600. WARNING VALID 260600. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1516 ATSANI (1516) 965 HPA AT 38.0N 157.4E FAR OFF EAST OF JAPAN MOVING NORTHEAST 28 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 260600UTC AT 40.0N 163.0E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=