WTJP22 RJTD 241200 WARNING 241200. WARNING VALID 251200. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1516 ATSANI (1516) DOWNGRADED FROM TYPHOON 965 HPA AT 32.9N 150.8E SEA EAST OF JAPAN MOVING EASTNORTHEAST 12 KNOTS. POSITION GOOD. MAX WINDS 60 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 100 MILES SOUTHEAST SEMICIRCLE AND 70 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 325 MILES SOUTHEAST SEMICIRCLE AND 300 MILES ELSEWHERE. FORECAST POSITION FOR 250000UTC AT 34.7N 154.8E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 60 KNOTS NEAR CENTER. FORECAST POSITION FOR 251200UTC AT 37.6N 159.0E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 55 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 261200UTC AT 39.5N 163.3E WITH 180 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 984 HPA, MAX WINDS 45 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=