WTJP31 RJTD 090900 WARNING 090900. WARNING VALID 100900. TYPHOON WARNING. TYPHOON 1822 MANGKHUT (1822) 975 HPA AT 15.1N 152.1E TRUKS MOVING WEST 20 KNOTS. POSITION FAIR. MAX WINDS 65 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 180 MILES. FORECAST POSITION FOR 092100UTC AT 14.7N 148.5E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 100900UTC AT 14.2N 145.4E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 940 HPA, MAX WINDS 90 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=