What we call the polar vortex -- a spin in the atmosphere -- can't actually be felt in the U.S. or anywhere on Earth. It doesnâ t ice over too often ...

This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air into the U.S. and Europe.

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the ...

The polar vortex has taken on an unexpected pattern this winter - one that’s made part of the United States the most unusually cold place on the planet, at least so far this year.

US gets a taste of the Arctic this week The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region, enveloping the North Pole.

A polar vortex is a massive circular weather pattern in the Arctic that traps the coldest air near the North Pole. It strengthens in winter but can sometimes weaken, allowing freezing air to move ...

In the second week of February, the vortex remained strong, but began to stretch out over North America. NOAA Climate.gov animation by Breanna Zavadoff, based on ERA5 reanalysis data.

The polar vortex is sending Arctic air south, bringing extreme cold to the U.S. and Europe. This winter's 10th polar vortex event is causing record low temperatures, with wind chills as low as -60°F.

This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air into the U.S. and Europe.