WTJP31 RJTD 020300 WARNING 020300. WARNING VALID 030300. STORM WARNING. SEVERE TROPICAL STORM 1604 NIDA (1604) 980 HPA AT 22.8N 112.9E SOUTH CHINA MOVING WESTNORTHWEST 12 KNOTS. POSITION GOOD. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 180 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 021500UTC AT 23.9N 110.3E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 35 KNOTS. FORECAST POSITION FOR 030300UTC AT 24.4N 108.1E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=