The Washington Post14d
These maps show how winter has flipped upside down in the U.S.
The map below shows ... laden subtropical jet stream. The path of the polar jet was nudged southward by lobes of the polar vortex that dipped into the United States, providing ample cold air.
Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.
Frozen frenzy: Nearly nonstop winter storms to hit the same parts of the US for days to come
Winter storms are about to blitz through the eastern half of the United States at a frenetic pace that could continue for a ...
Powerful polar vortex in the stratosphere brings frigid temperatures to US
A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.
PBS8y
About The Jet Stream
How Would You Define a Jet Stream? The jet stream, one of the most dramatic forces of nature, was discovered during World War II when aviators first tried to cross the Pacific. This strong wind ...