A winter storm blanketed the nation's midsection from Kansas to Illinois with up to 11 inches of snow Friday, closing schools and snarling traffic.
At least eight people were killed in traffic accidents that authorities blamed on slick roads.
The storm was heading east toward Ohio and north toward Michigan and Wisconsin, with up to six inches of snow expected to fall in those areas, forecasters said.
"We strongly discourage travel unless it's an emergency," said Illinois State Trooper Jerry Steppe.
Visibility in some parts of Illinois was down to one-fourth mile, the National Weather Service reported. About 11 inches of snow fell in the Belleville area in southern Illinois, while 10 inches fell at Champaign, Ill., and nine inches at Springfield, Ill.
"It was like somebody dumped a bucket on us," said Robert Hickman, superintendent of schools in Effingham County, Ill., where schools were closed early.