WTJP32 RJTD 170300 WARNING 170300. WARNING VALID 180300. TYPHOON WARNING. SEVERE TROPICAL STORM 1721 LAN (1721) 985 HPA AT 10.3N 131.8E SEA EAST OF PHILIPPINES MOVING WEST 14 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 240 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 171500UTC AT 11.1N 132.5E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. FORECAST POSITION FOR 180300UTC AT 12.6N 133.0E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 70 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=