WTJP31 RJTD 030300 WARNING 030300. WARNING VALID 040300. STORM WARNING. SEVERE TROPICAL STORM 1703 NANMADOL (1703) 990 HPA AT 26.9N 124.3E EAST CHINA SEA MOVING NORTH 15 KNOTS. POSITION GOOD. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 80 MILES. FORECAST POSITION FOR 031500UTC AT 30.4N 126.1E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 040300UTC AT 33.4N 131.1E WITH 80 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=