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

"Once the snow starts to come in, the temperature will essentially drop like a rock," Fox Forecast Center Meteorologist Marissa Lautenbacher told The Post.

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

The 10 Weather Impact team issued Alert Days for next week because of the polar vortex being responsible for the cold temperatures.

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues to move south. As it moves through parts of the state, it will produce small snow showers, bringing more snow to the region before drier conditions return.

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.

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These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary between Arctic and more temperate air – dips deeply southward, bringing the cold Arctic air to regions that don’t often experience it.

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,

The following Colorado snow totals have been reported by the National Weather Service for Jan. 19, 2025 as of 9:50 a.m. Sunday: RELATED: Everything you need to know about the polar vortex bringing extreme cold to Colorado Arvada,

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and sends temperatures tumbling to levels not seen in years.