WTJP22 RJTD 071800 WARNING 071800. WARNING VALID 081800. WARNING IS UPDATED EVERY 6 HOURS. TYPHOON WARNING. TYPHOON 1813 SHANSHAN (1813) 970 HPA AT 32.5N 142.2E SEA EAST OF JAPAN MOVING NORTHWEST 09 KNOTS. POSITION GOOD. MAX WINDS 70 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 55 MILES. RADIUS OF OVER 30 KNOT WINDS 300 MILES EAST SEMICIRCLE AND 210 MILES ELSEWHERE. FORECAST POSITION FOR 080600UTC AT 33.6N 141.2E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 70 KNOTS NEAR CENTER. FORECAST POSITION FOR 081800UTC AT 35.2N 140.7E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 975 HPA, MAX WINDS 65 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 091800UTC AT 38.9N 144.1E WITH 150 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 985 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 101800UTC AT 42.5N 158.9E WITH 220 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS. BECOMING EXTRATROPICAL LOW. JAPAN METEOROLOGICAL AGENCY.=