WTJP32 RJTD 201500 WARNING 201500. WARNING VALID 211500. TYPHOON WARNING. SEVERE TROPICAL STORM 1820 CIMARON (1820) 985 HPA AT 18.4N 147.0E MARIANAS MOVING NORTHWEST 10 KNOTS. POSITION FAIR. MAX WINDS 55 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 50 MILES. RADIUS OF OVER 30 KNOT WINDS 300 MILES EAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 210300UTC AT 20.1N 145.0E WITH 40 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 65 KNOTS NEAR CENTER. FORECAST POSITION FOR 211500UTC AT 21.8N 142.4E WITH 60 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 70 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=