MINNEAPOLIS — A potent spring storm is raking the Plains and Midwest.

Blizzard conditions shut down a long stretch of Interstate 90 in South Dakota on Friday and Gov. Dennis Daugaard has closed some state government offices. Dozens of schools canceled classes.

A National Weather Service blizzard warning covers an area including most of Nebraska and sprawls from northeast Colorado to southeast Minnesota.

The National Weather Service says parts of Nebraska could get up to 14 inches of snow, with up to 10 inches in Iowa. Wind gusts of up to 50 mph will make travel hazardous.

Parts of Michigan are bracing for a weekend ice storm.

Forecasters say there is a risk of tornadoes south and east of the expected snow, with the focus of that activity in Arkansas on Friday.