WTJP22 RJTD 171800 WARNING 171800. WARNING VALID 181800. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1621 SARIKA (1621) 965 HPA AT 18.0N 111.5E SOUTH CHINA SEA MOVING WESTNORTHWEST 09 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 180600UTC AT 19.2N 110.1E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 181800UTC AT 20.0N 109.0E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 191800UTC AT 21.5N 107.1E WITH 95 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 35 KNOTS. FORECAST POSITION FOR 201800UTC AT 22.2N 106.3E WITH 130 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1004 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=