WTJP31 RJTD 080300 WARNING 080300. WARNING VALID 090300. STORM WARNING. TROPICAL STORM 1822 MANGKHUT (1822) 1000 HPA AT 14.0N 161.5E MARSHALLS MOVING WESTNORTHWEST 15 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES. FORECAST POSITION FOR 081500UTC AT 14.5N 158.4E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 090300UTC AT 14.6N 154.9E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=