The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

This blast of cold weather is due to activity of the polar vortex.

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...

NEW ORLEANS — The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...

Abundant cloud cover and rain will keep overnight temperatures more mild, with lows in the 50s and 60s throughout Central ...

NEW ORLEANS -- The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...

or at all events distinguished, by the Adams Prize. The Motion of Vortex Rings.

A series of cold fronts the last few weeks has kept Florida downright chilly, as another winter storm starts to take aim this ...