Polar vortex, Arctic blast

The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...
Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...
These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...
Another blast of Arctic air is set to sweep across the South early next ... polar air comes south sometimes where the ...
An arctic air mass settled over New York City and much of the country Sunday evening, bringing a deep freeze and the chance ...
With severely cold temperatures forecasted in York County this week, utility companies are advising customers to take safety ...
Several businesses and organizations have announced closings and cancellations ahead of the extremely cold temperatures.
A potent surge of Arctic air starts settling in Monday evening as a massive dip in the jet stream pulls in frigid air across ...