These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...
Marylanders are bracing for the upcoming polar vortex, expected to bring temperatures into the single digits early this week.
Stable polar vortex: When the stratosphere over the Arctic is cold, it's considered stable. The wind around the polar vortex ...
A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...
President-elect Donald Trump's second inauguration will mark the coldest presidential ceremony in more than 40 years.
A piece of the polar vortex is spilling into the Midwest, creating extreme cold for the Chicago area and northwest Indiana ...