WTJP22 RJTD 031200 WARNING 031200. WARNING VALID 041200. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. SEVERE TROPICAL STORM 1716 MAWAR (1716) 990 HPA AT 22.6N 116.3E SOUTH CHINA SEA MOVING NORTH SLOWLY. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES NORTHEAST SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 040000UTC AT 23.2N 114.6E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 40 KNOTS NEAR CENTER. FORECAST POSITION FOR 041200UTC AT 24.4N 113.4E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1002 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=