The polar vortex refers to a blast of cold air typically confined to the North Pole. Occasionally, this frigid system shifts southward, bringing bone-chilling temperatures to the U.S.

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

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as a polar vortex, is forecast to bring subzero temperatures to the ...

Weather The polar vortex: What to know about the weather feature responsible for the arctic blast Published: Jan. 04, 2025, 5:00 p.m.

Vast weather patterns can carry blasts of frigid air far from the polar regions—here’s how it works ...

The scientists examined the polar vortex last week prior to the Arctic blast. At the time, Butler and Ciasto spotted some potential stretching of the polar vortex.

Polar vortex: Arctic plunge to bring another cold blast to Cincinnati We've already fallen as low as 1° this year. Another dip in the polar vortex makes that possible for Cincinnati again next week.

We are getting two accumulating snows between Wednesday and Saturday. Then a blast of true Arctic air marches into Michigan again. The next few weeks will seal the deal on making this a true ...

Tuesday morning will be cold enough to delay the start of school for some districts on the Front Range.

When will the polar vortex reach Texas? The effects of the polar vortex are expected to reach Texas on Monday and bring freezing or below-freezing temperatures throughout the week.

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.