LOUISVILLE, Ky. (AP) — Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people, including nine victims in Kentucky who died during flooding from heavy rains.

At the Dakota Zoo in Bismarck, which closed last weekend due to cold, critters such as bison, elk and bighorn sheep don't mind the temperatures as they munch food to stay warm and

A deadly coast-to-coast winter storm sweeping across the United States this weekend continues to threaten parts of the South, Midwest and Northeast with more flooding, widespread strong winds, and heavy snow.