A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar vortex affects the weather.

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A dangerous winter storm sweeping across the South has prompted Blizzard Warnings for portions of Texas and Louisiana, new wildfires have erupted in Southern California, and the polar vortex continues to tighten its grip across the U.

The temperature is predicted to be around 22 degrees during the swearing-in, the coldest since Ronald Reagan’s second inauguration.

Then, catastrophe in California, with wind-whipped flames ... That means more energy bouncing off and warping or moving the polar vortex, scientists say. And climate change is also messing with ...

50s and 60s in California, and 60s and 70s in the Desert Southwest. Where will it snow in the US?See where the polar vortex is set to make an icy impact Winter storm warnings have been issued in ...

A polar vortex is slated to sweep most of the continental ... 40s for the inner West and Pacific Northwest, 50s and 60s in California, and 60s and 70s in the Desert Southwest.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

Erin Davis/Axios Visuals An invasion of frigid air from the Arctic is sweeping south from the Plains and Ohio Valley Sunday, moving towards the Southeast and East. Threat level: The colder-than-average temperatures threatens public health for those exposed to the wind and cold,

A major cold blast is in store for millions of Americans as a lobe of a polar vortex will bring brutally cold temperatures to nearly every American east of the Rockies.

The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that typically circulates around both the North and South Poles, but can push cold winds down into the U.S. and Canada when it weakens and expands.