WTJP21 RJTD 050000 WARNING 050000. WARNING VALID 060000. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 2521 MATMO (2521) 975 HPA AT 20.3N 111.5E SOUTH CHINA SEA MOVING WESTNORTHWEST 12 KNOTS. POSITION GOOD. MAX WINDS 65 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 40 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 051200UTC AT 21.4N 109.5E WITH 25 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 70 KNOTS NEAR CENTER. FORECAST POSITION FOR 060000UTC AT 22.3N 107.5E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS. EXTENDED OUTLOOK. FORECAST POSITION FOR 070000UTC AT 23.1N 105.1E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1006 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=