WTJP21 RJTD 290600 WARNING 290600. WARNING VALID 300600. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 2410 SHANSHAN (2410) DOWNGRADED FROM TYPHOON 980 HPA AT 32.8N 130.2E KYUSYU MOVING NORTH 07 KNOTS. POSITION GOOD. MAX WINDS 60 KNOTS. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES. FORECAST POSITION FOR 291800UTC AT 33.3N 130.8E WITH 25 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS. FORECAST POSITION FOR 300600UTC AT 33.6N 131.9E WITH 42 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 45 KNOTS. EXTENDED OUTLOOK. FORECAST POSITION FOR 310600UTC AT 33.8N 135.1E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 40 KNOTS. FORECAST POSITION FOR 010600UTC AT 34.0N 135.5E WITH 140 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 40 KNOTS. FORECAST POSITION FOR 020600UTC AT 36.2N 137.6E WITH 200 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 35 KNOTS. FORECAST POSITION FOR 030600UTC AT 39.8N 143.9E WITH 250 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 35 KNOTS. JAPAN METEOROLOGICAL AGENCY.=