WTJP31 RJTD 051500 WARNING 051500. WARNING VALID 061500. TYPHOON WARNING. TYPHOON 1601 NEPARTAK (1601) 940 HPA AT 17.5N 132.7E SEA EAST OF PHILIPPINES MOVING WESTNORTHWEST 18 KNOTS. POSITION GOOD. MAX WINDS 90 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 180 MILES NORTHEAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 060300UTC AT 19.0N 129.4E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 935 HPA, MAX WINDS 95 KNOTS NEAR CENTER. FORECAST POSITION FOR 061500UTC AT 20.5N 126.3E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 925 HPA, MAX WINDS 100 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=