Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

For the purposes of this article, we're talking about the stratospheric polar vortex. It's a semi-permanent area of low pressure that resides over the Arctic. Stable polar vortex: When the ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

causing it to unravel "in a spectacular fashion," as described by NOAA’s Polar Vortex Blog. The once-stable system lost its circular shape, became distorted, and even reversed its wind direction. Open ...

Researchers from the University of Leeds have found there was an extremely strong stratospheric polar vortex (SPV) – a large spinning mass of cold air in the stratosphere around 15 miles above ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe.

Warm conditions across much of Europe are forecast to give way to periods of unseasonably cool temperatures and stormy weather during April. The first such shift will take place over the weekend ...

When the polar vortex is strong and stable, this belt of winds keeps the season’s coldest air locked across the Far North. Occasionally, we’ll see the polar vortex’s circulation weaken and ...

When the polar vortex begins to wobble and allows arctic air to spill south into northern Illinois in January, we usually end up with dangerously-cold air around Chicago. When it happens in April ...

"The large polar vortex disruption from the second week of March is playing a key role in next week’s eastern US cold snap," meteorologist Judah Cohen of Atmospheric and Environmental Research told ...

Scientists say a "swirling polar vortex" miles above the Earth caused three deadly storms in the UK and Ireland, which brought severe flooding and record wind speeds. Four people lost their lives ...

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...