WTJP31 RJTD 272100 WARNING 272100. WARNING VALID 282100. STORM WARNING. TROPICAL STORM 1504 MAYSAK (1504) 998 HPA AT 07.9N 155.4E MARSHALLS MOVING WESTNORTHWEST 09 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES. FORECAST POSITION FOR 282100UTC AT 07.7N 151.9E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=