U.S. Midwest braces for dangerous Arctic chill tied to polar vortex

World Jan 30, 2019

U.S. Midwest braces for dangerous Arctic chill tied to polar vortex

Millions of Americans braced Tuesday for a dangerous polar vortex that began to settle over a large swath of the United States, threatening to set new records as schools and businesses closed and authorities warned of frostbite. Temperatures in almost a dozen states stretching over ...

Language | THE BUZZ Jan 11, 2014

What the heck is that word I keep hearing?

A polar vortex (kyokūzu/極渦) is a persistent, large-scale cyclone located near either of a planet's geographical poles. The extreme arctic blasts that wreaked havoc across the United States last week were caused by a counterclockwise-rotating pool of cold, dense air. The frigid air, piled ...

'Polar vortex' pushes dangerous subzero temperatures into Midwest

World Jan 6, 2014

'Polar vortex' pushes dangerous subzero temperatures into Midwest

A whirlpool of frigid, dense air known as a "polar vortex" descended Monday into much of the U.S., pummeling parts of the country with a dangerous cold that could break decades-old records with wind chill warnings stretching from Montana to Alabama. For a big chunk ...