WTJP31 RJTD 022100 WARNING 022100. WARNING VALID 032100. STORM WARNING. SEVERE TROPICAL STORM 1703 NANMADOL (1703) 990 HPA AT 25.4N 124.1E EAST CHINA SEA MOVING NORTHNORTHWEST 15 KNOTS. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 80 MILES. FORECAST POSITION FOR 030900UTC AT 28.8N 124.9E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 032100UTC AT 32.3N 128.0E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=