The most unusually cold air in the Northern Hemisphere will move into the Plains and Midwest this weekend as the polar vortex lobe zaps the country like a jellyfish tentacle. Temperatures may be ...

According to the National Oceanic and Atmospheric Administration, a strong polar jet stream moving roughly along the same latitude as the vortex makes the vortex more stable and traps cold Arctic ...

The polar jet stream and the polar vortex Miles above the Earth, the two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to ...

The polar vortex is area of fast-moving winds well above the Earth’s surface and the jet stream that circle the Arctic during the Northern Hemisphere’s coldest months. When it’s strong ...

The polar vortex is a large area of cold air and low ... causing the ceremony to move indoors and the parade to be canceled.

The Arctic air associated with the southward moving Polar Vortex will bring 10 below zero to 20 below zero temperatures west of the Great Lakes. Here in Michigan, that bitterly cold air will be ...

That's when temperatures warm in the area of the vortex, allowing for the vortex to move more drastically, and potentially sending colder air into Asia, Europe, or the United States. As for if the ...