BISMARCK, N.D. — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the Eastern U.S ...

It marks the 10th - and coldest - polar vortex this season so far, with pressure systems pushing cold air from the Arctic southwards into North America and Europe. The polar vortex is a large area ...

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 ...

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 ...

Bitter cold temperatures are expected to continue throughout the week in Chicago, with wind chills plunging to minus 20, the National Weather Service said. A cold weather advisory is in effect ...

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LOUISVILLE, Kentucky — 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 US over the weekend, ...

Lisa Muscat carries her dog Zoey to safety after a water main break in Detroit caused massive flooding, triggering evacuations, Monday, Feb. 17, 2025. (Andy Morrison/Detroit News via AP) ...

I'm Mimi Kiley reporting. The term "polar vortex" usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and ...