The images, captured on January 6 by the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA’s Aqua ...

The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Storm Blair is expected to move through Ohio on Sunday, bringing snow and sleet accumulations of between 5 and 9 inches on ...

AccuWeather forecast that the state's "RealFeel" temperature could be as cold as between 10-20 degrees from January 8-10.

A polar vortex with the potential to damage Florida's seasonal citrus crop is expected to descend on the state next week -- ...

Be careful if you go to the United States, you could be faced with extreme temperatures. The National Weather Service (NWS) ...

An extreme cold wave from the Arctic is threatening the United States. Historically low temperatures could affect several regions, according to weather forecasts. This cold wave, fueled by large-scale ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it?

Frigid air that normally stays in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering.

Snow and ice blanketed major roads across Kansas, western Nebraska and parts of Indiana, where the state’s National Guard was activated to help stranded motorists.