STORM WARNING. DEVELOPED LOW FORMER SEVERE TROPICAL STORM 1618 CHABA (1618) 986 HPA
AT 38N 137E SEA OF JAPAN MOVING EASTNORTHEAST 50 KNOTS.
WARM FRONT FROM 38N 137E TO 37N 142E 36N 145E.
COLD FRONT FROM 38N 137E TO 35N 135E 31N 131E.
WINDS 30 TO 55 KNOTS WITHIN 240 MILES OF LOW SOUTHEAST SEMICIRCLE AND
150 MILES ELSEWHERE.