WTJP21 RJTD 271800 WARNING 271800. WARNING VALID 281800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 1504 MAYSAK (1504) UPGRADED FROM TROPICAL DEPRESSION 1002 HPA AT 07.8N 156.2E MARSHALLS MOVING NORTHWEST 07 KNOTS. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES. FORECAST POSITION FOR 281800UTC AT 07.7N 152.5E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 40 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 291800UTC AT 07.9N 147.8E WITH 140 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 301800UTC AT 08.7N 142.2E WITH 210 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=