WTJP22 RJTD 041800 WARNING 041800. WARNING VALID 051800. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 2504 DANAS (2504) UPGRADED FROM TROPICAL DEPRESSION 996 HPA AT 20.1N 117.2E SOUTH CHINA SEA ALMOST STATIONARY. POSITION FAIR. MAX WINDS 35 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 120 MILES SOUTH SEMICIRCLE AND 90 MILES ELSEWHERE. FORECAST POSITION FOR 051800UTC AT 21.3N 117.4E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 40 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 061800UTC AT 23.9N 119.8E WITH 110 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 071800UTC AT 27.8N 122.3E WITH 165 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 081800UTC AT 28.1N 122.0E WITH 210 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 990 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 091800UTC AT 29.4N 122.1E WITH 280 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA, MAX WINDS 35 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=