WTJP32 RJTD 210900 WARNING 210900. WARNING VALID 220900. STORM WARNING. SEVERE TROPICAL STORM 2403 GAEMI (2403) 992 HPA AT 17.1N 125.0E SEA EAST OF PHILIPPINES MOVING NORTHNORTHWEST SLOWLY. POSITION FAIR. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 240 MILES. FORECAST POSITION FOR 220900UTC AT 18.3N 125.4E WITH 57 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=