The weather patterns have been very dynamic, with massive ridges and troughs in the jet stream leading to many cross-country storms while shots of Arctic air send temperatures plummeting.

An Arctic air mass kept its grip on much of the central and eastern U.S. on Friday, plunging temperatures to record lows as snow blanketed central Colorado and the Pacific Northwest braced for an ...

The Arctic plays a vital role in global temperatures and weather systems. It’s “sort of like our planetary air conditioning system,” said Twila Moon, deputy lead scientist at the National ...

CORPUS CHRISTI, Texas — A fresh batch of Arctic air invaded the Coastal Bend overnight and will stick around into the weekend. There are a few tidbits you need to know. This is normal.

Weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole into the U.S. and Europe. In Kentucky, Gov. Andy Beshear on Tuesday said the severe weather ...

A bitter blast of Arctic air – which is related to the polar vortex – is roaring south across the central U.S. Tuesday, bringing with it record-cold temperatures and "dangerously" low wind chills.

Arctic air has returned, bringing subfreezing temperatures and the potential for snow to at least 40 states. This blast of cold is moving swiftly across the country, with wind chills in some areas ...

This northwest flow pulls in Arctic air for much of the Great Lakes region. High temperatures will only be in the mid-teens with lows falling down near zero on both Monday and Tuesday night.

The Chicago area is in the throes of a bitter blast of cold Arctic air, but when will the region finally see more typical temperatures for the later stages of February? According to the NBC 5 ...

It'll come down steady and maybe even hard at times, and it doesn't look like it'll be gone by dawn Wednesday morning, but look at those arrows, strong northerly winds pulling down that Arctic air and ...

The arctic cold air will move through Colorado between Tomorrow and Thursday. Eastern Colorado could see wind chills 25 below. Tuesday is a First Alert Weather Day because of the cold temperatures.