WTJP31 RJTD 241500 WARNING 241500. WARNING VALID 251500. STORM WARNING. SEVERE TROPICAL STORM 2630 CHAMPI (2630) 990 HPA AT 27.7N 123.5E EAST CHINA SEA MOVING NORTH 11 KNOTS. POSITION GOOD. MAX WINDS 50 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 350 MILES EAST SEMICIRCLE AND 300 MILES ELSEWHERE. FORECAST POSITION FOR 250300UTC AT 29.6N 124.8E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA, MAX WINDS 45 KNOTS NEAR CENTER. FORECAST POSITION FOR 251500UTC AT 31.1N 126.5E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 998 HPA, MAX WINDS 40 KNOTS NEAR CENTER. JAPAN METEOROLOGICAL AGENCY.=