WTJP31 RJTD 032100 WARNING 032100. WARNING VALID 042100. STORM WARNING. SEVERE TROPICAL STORM 1703 NANMADOL (1703) 985 HPA AT 32.1N 128.9E EAST CHINA SEA MOVING NORTHEAST 25 KNOTS. POSITION GOOD. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 20 MILES. RADIUS OF OVER 30 KNOT WINDS 100 MILES EAST SEMICIRCLE AND 80 MILES ELSEWHERE. FORECAST POSITION FOR 040900UTC AT 34.0N 135.6E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 042100UTC AT 35.2N 143.2E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 40 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=