WTJP23 RJTD 031800 WARNING 031800. WARNING VALID 041800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1711 NALGAE (1711) 992 HPA AT 28.2N 163.4E SEA AROUND OF WAKE MOVING NORTHWEST 06 KNOTS. POSITION FAIR. MAX WINDS 40 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 180 MILES EAST SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 041800UTC AT 30.4N 162.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 40 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 051800UTC AT 37.7N 160.8E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 061800UTC AT 42.5N 157.1E WITH 140 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 40 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=