A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens ...

Jet streams are air currents formed by the collision of warm tropical air and cold polar air in the atmosphere, plus the rotation of the planet. When meteorologists in North America mention “the ...

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, ...

(KNWA/KFTA)— After a strong cold front comes through this Saturday ... One way the airmass can be pushed towards us has to do with the polar jet stream and involves the Polar Vortex.

Maps show what to expect as the cold front arrives. The polar vortex is a large area ... During the winter months and when the jet stream allows, this cold air can drop farther down into lower ...

“Typically going from west to east, and formed at the boundary between significantly different air temperatures, like between cold polar air and warmer tropical air.” “The jet stream is ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia ... During the winter months and when the jet stream allows, this cold air can drop farther down into lower latitudes ...