WTJP21 RJTD 030000 WARNING 030000. WARNING VALID 040000. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1504 MAYSAK (1504) 950 HPA AT 13.9N 131.1E SEA EAST OF PHILIPPINES MOVING WEST 09 KNOTS. POSITION GOOD. MAX WINDS 80 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 180 MILES NORTH SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 031200UTC AT 14.2N 128.9E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 040000UTC AT 14.6N 126.2E WITH 75 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 70 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 050000UTC AT 16.2N 122.3E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 55 KNOTS NEAR CENTER. FORECAST POSITION FOR 060000UTC AT 18.5N 118.8E WITH 160 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 45 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=