However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and ...

This will be due to a polar vortex, an area of strong winds that encircle the Arctic and typically keeps the coldest air locked near the Pole, according to the FOX Forecast Center. This weekend ...

Polar Vortex Set to Envelop Much of US in Freezing Temperatures By Hannah Lang and Brendan O'Brien (Reuters) - A blast of Arctic air is set to cover much of the United States with temperatures ...