The polar vortex, as explained by the National Weather Service, is a large area of low pressure and cold air that encircles ...

LOUISVILLE, Ky. (AP) — Harsh weather moved west on Monday as a polar vortex was expected to grip ... including nine victims in Kentucky who died during flooding from heavy rains.

LOUISVILLE, Ky. (AP) — Harsh weather moved west on Monday as a polar vortex was expected to grip ... including nine victims in Kentucky who died during flooding from heavy rains.

LOUISVILLE, Ky. — Harsh cold descended on the nation's midsection Monday as a polar vortex gripped the Rockies ... North Pole into the U.S. and Europe. Kentucky, Appalachia battered by flooding ...

LOUISVILLE, Ky. (AP ... Rockies, Midwest, Northeast hit with snow storms, Polar Vortex on the way Ice and snow made road travel treacherous in large swaths of Michigan, which remained under ...

More than 95 million people in the U.S. are facing gripping cold Tuesday as a polar vortex sends temperatures ... Meanwhile, deadly flood-battered Kentucky braced for the winter storm.

LOUISVILLE, Ky. — Harsh weather moved west on Monday as a polar vortex was expected to grip ... including nine victims in Kentucky who died during flooding from heavy rains.

including nine victims in Kentucky who died during flooding from heavy rains. LOUISVILLE, Ky. (AP) — Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the ...