WTJP22 RJTD 171200 WARNING 171200. WARNING VALID 181200. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1621 SARIKA (1621) 965 HPA AT 17.6N 112.3E SOUTH CHINA SEA MOVING WESTNORTHWEST 10 KNOTS. POSITION GOOD. MAX WINDS 75 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 40 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES. FORECAST POSITION FOR 180000UTC AT 18.6N 110.8E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 960 HPA, MAX WINDS 80 KNOTS NEAR CENTER. FORECAST POSITION FOR 181200UTC AT 19.5N 109.6E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 191200UTC AT 21.3N 107.6E WITH 95 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 201200UTC AT 22.2N 106.3E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1004 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=