This image provided by the Kansas Highway Patrol shows the aftermath of a more than 70-car pileup on Interstate 70 near Goodland, Kan., caused by a dust storm on Friday, March 14.

This image provided by the Kansas Highway Patrol shows the aftermath of a pileup on Interstate 70 near Goodland, Kan., caused by a dust storm and involving more than 70 vehicles, Friday, March 14 ...

Authorities say a dust storm last week reduced visibility to nearly zero on Interstate 70 in western Kansas.

Kansas Highway Patrol This image provided by the Kansas Highway Patrol shows the aftermath of a pileup on Interstate 70 near Goodland, Kan., caused by a dust storm and involving more than 70 ...

The fatalities Friday near Goodland were the first in the area in a dust storm since 2014, said Jeremy Martin, the Weather Service meteorologist in charge there.

Kansas Highway Patrol This image provided by the Kansas Highway Patrol shows the aftermath of a pileup on Interstate 70 near Goodland, Kan., caused by a dust storm and involving more than 70 ...