Winter storm brings blizzard conditions and dangerous wind chills to the Midwest

A potent winter storm brought blizzard conditions, treacherous travel and power outages in parts of the Upper Midwest on Monday as other areas of the country experienced plunging temperatures, strong winds and a mix of snow, ice, and rain.

The snow and strengthening winds began spreading Sunday across the northern Plains, where the National Weather Service warned of whiteout conditions and blizzard conditions that could make travel impossible in some areas. The wind and snow created “a...