WTJP21 RJTD 230000 WARNING 230000. WARNING VALID 240000. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1705 NORU (1705) UPGRADED FROM TROPICAL STORM 992 HPA AT 28.2N 151.4E SEA AROUND OF MINAMITORISIMA ALMOST STATIONARY. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 180 MILES. FORECAST POSITION FOR 240000UTC AT 27.2N 152.9E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 60 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 250000UTC AT 26.6N 157.0E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 260000UTC AT 29.1N 156.6E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 80 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=