WTJP21 RJTD 310600 WARNING 310600. WARNING VALID 010600. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. SEVERE TROPICAL STORM 2606 JANGMI (2606) 975 HPA AT 22.0N 127.9E SEA SOUTH OF OKINAWA MOVING NORTH 11 KNOTS. POSITION FAIR. MAX WINDS 60 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 100 MILES. RADIUS OF OVER 30 KNOT WINDS 240 MILES. FORECAST POSITION FOR 311800UTC AT 23.4N 127.3E WITH 25 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 010600UTC AT 25.5N 127.4E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 020600UTC AT 30.4N 130.9E WITH 55 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. FORECAST POSITION FOR 030600UTC AT 34.6N 139.6E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 040600UTC AT 36.8N 146.7E WITH 100 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=