WTJP31 RJTD 240900 WARNING 240900. WARNING VALID 250900. TYPHOON WARNING. TYPHOON 2607 MEKKHALA (2607) 975 HPA AT 21.7N 124.7E SEA SOUTH OF OKINAWA MOVING NORTH SLOWLY. POSITION GOOD. MAX WINDS 65 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES EAST SEMICIRCLE AND 40 MILES ELSEWHERE. RADIUS OF OVER 30 KNOT WINDS 150 MILES. FORECAST POSITION FOR 250900UTC AT 24.9N 125.8E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 60 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=