WTJP31 RJTD 170300 WARNING 170300. WARNING VALID 180300. TYPHOON WARNING. TYPHOON 1501 MEKKHALA (1501) 965 HPA AT 11.8N 126.3E SEA EAST OF PHILIPPINES MOVING WESTNORTHWEST 10 KNOTS. POSITION FAIR. MAX WINDS 70 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 210 MILES NORTH SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 171500UTC AT 12.5N 124.3E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 180300UTC AT 13.5N 122.6E WITH 70 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 55 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=