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 strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

During winter in the Northern Hemisphere, the polar vortex can expand, pushing cold air southward along with the jet stream, the service said. The Atmospheric and Environmental Research report ...

Like the jet stream, the polar vortex spins around the earth from west to east. This is caused predominately by the Earth's rotation. Smaller-scale atmospheric disturbances can cause it to reverse ...

Click here to see them. Polar vortex and jet stream are both extending southward into the US The National Oceanic and Atmospheric Administration's Global Forecasting System model predicted the ...