WTJP31 RJTD 120900 WARNING 120900. WARNING VALID 130900. TYPHOON WARNING. TYPHOON 1614 MERANTI (1614) 920 HPA AT 18.6N 128.9E SEA EAST OF PHILIPPINES MOVING WESTNORTHWEST 11 KNOTS. POSITION GOOD. MAX WINDS 100 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 60 MILES. RADIUS OF OVER 30 KNOT WINDS 120 MILES. FORECAST POSITION FOR 122100UTC AT 19.1N 126.1E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 915 HPA, MAX WINDS 105 KNOTS NEAR CENTER. FORECAST POSITION FOR 130900UTC AT 19.7N 123.3E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 910 HPA, MAX WINDS 110 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=