WTJP21 RJTD 230000 WARNING 230000. WARNING VALID 240000. WARNING IS UPDATED EVERY 6 HOURS. GALE WARNING. TROPICAL STORM 2404 PRAPIROON (2404) DOWNGRADED FROM SEVERE TROPICAL STORM 992 HPA AT 21.2N 107.4E VIETNAM MOVING NORTHWEST SLOWLY. POSITION FAIR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 150 MILES. FORECAST POSITION FOR 231200UTC AT 21.3N 107.0E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 994 HPA, MAX WINDS 35 KNOTS NEAR CENTER. FORECAST POSITION FOR 240000UTC AT 21.3N 106.5E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 996 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=