WTJP32 RJTD 041500 WARNING 041500. WARNING VALID 051500. TYPHOON WARNING. TYPHOON 1813 SHANSHAN (1813) 970 HPA AT 22.1N 148.0E SEA AROUND OF MINAMITORISIMA MOVING NORTHNORTHWEST 09 KNOTS. POSITION FAIR. MAX WINDS 70 KNOTS NEAR CENTER. RADIUS OF OVER 50 KNOT WINDS 55 MILES. RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTHEAST SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 050300UTC AT 23.8N 147.1E WITH 30 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 965 HPA, MAX WINDS 75 KNOTS NEAR CENTER. FORECAST POSITION FOR 051500UTC AT 25.5N 146.2E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 955 HPA, MAX WINDS 80 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=