WTJP22 RJTD 041800 WARNING 041800. WARNING VALID 051800. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. TROPICAL STORM 1505 HAISHEN (1505) 998 HPA AT 08.7N 152.2E TRUKS ALMOST STATIONARY. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 60 MILES. FORECAST POSITION FOR 051800UTC AT 09.5N 151.3E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 50 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 061800UTC AT 10.4N 150.9E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 071800UTC AT 11.7N 150.5E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 1002 HPA, MAX WINDS 35 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=