WTJP31 RJTD 030900 WARNING 030900. WARNING VALID 040900. TYPHOON WARNING. TYPHOON 1504 MAYSAK (1504) 960 HPA AT 14.1N 129.5E SEA EAST OF PHILIPPINES MOVING WEST 11 KNOTS. POSITION GOOD. MAX WINDS 75 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 80 MILES NORTH SEMICIRCLE AND 50 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 180 MILES NORTH SEMICIRCLE AND 120 MILES ELSEWHERE. FORECAST POSITION FOR 032100UTC AT 14.4N 127.0E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 040900UTC AT 15.4N 124.4E WITH 75 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=