 Typhoon Nancy , which developed on October 10 , hit eastern Luzon on October 14 . Its winds were reduced to tropical storm strength , but Nancy re @-@ intensified to an 80 knots ( 150 km / h ) typhoon over the South China Sea . It hit northern Vietnam on the October 18 , and dissipated shortly thereafter . The heavy rains accompanied by the system caused 309 fatalities and over US $ 46 million in damage ( 1982 dollars ) . 
