"Temperatures are going to be nose-diving," says Billy Williams, a weather service meteorologist in Sioux Falls, S.D. The winds there are slowing dropping off, but the cold temperatures will compensate for it.
Another 10 inches of snow was expected to drop in Iowa, already buried by more than 2 feet which fell in December; the same scenario that's facing southern Wisconsin. Meanwhile up to 9 inches could fall in southeast North Dakota that forecasters warned would create hazardous zero-visibility driving conditions. Wind gusts of 30 miles per hour were expected in Illinois — along with a foot of snow — while large drifts were anticipated in Nebraska and Iowa.
The Associated Press contributed to this article.