We believe quality journalism should be available to everyone, paid for by those who can afford it. Harsh weather moved west ...

But where exactly is this air coming from, and how did it arrive? For starters, the Arctic polar vortex is a band of strong westerly winds that form in the stratosphere between about 10 and 30 ...

It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here ...

Some of the coldest temperatures are expected in Montana, and avalanche warnings have been issued in Utah, Colorado and ...

A lobe of the polar vortex, a ring of freezing air typically found near the ... Monday: South Dakota, Nebraska, Iowa and ...

Harsh weather moved west on Monday as a polar vortex was expected to grip the ... Michigan State Police said on X. Authorities in Colorado reported eight people were killed in fatal vehicle ...

An in-depth look at the forecasted polar vortex collapse and its potential effects on weather patterns across North America this March ...

Treacherous winter conditions have led to numerous crashes in Michigan and fatal accidents in Colorado, as authorities urge ...

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. While the ...

These polar vortex stretches are happening more frequently as the world — and especially the Arctic — warms, a 2021 paper published in the journal Science, also co-authored by Cohen ...