How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...
A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of ...
Think of a jet stream as a river of fast-moving air ... generally blow from west to east in both the Northern Hemisphere and the Southern Hemisphere. Jet streams can also weaken, shift or reform ...
The Deep South of the United States was hit with a rare snowstorm, the result of a collision of air pressure systems moved by ...