According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know.

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is always present near the poles, though it weakens during summer and intensifies in winter.

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

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the record-breaking blast of cold, snow and wintry conditions that reached all the way to the Gulf Coast this week.

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will feel like 15 degrees below zero.

Scientists say a warming planet may have been responsible for a winter storm that dropped 10 inches of snow on Northwest Florida.

Temperatures will reach the mid-40s throughout the weekend, with a forecast high of 59 degrees on Monday in Baltimore.

Chief Meteorologist Jeff Ranieri tracks has the latest on the atmospheric river and how much rain we’ll get into the weekend in your 7 day Microclimate Forecast.

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New Jersey should see temperatures rise this weekend after a week-long polar vortex called "the coldest week of the year" by National Weather Service.