Erin Davis/Axios Visuals A week-long, unusually cold Arctic outbreak is set to bring frigid mid-February conditions to most locations east of the Rockies beginning Sunday. Why it matters: This event ...

Freezing temperatures and low wind power production will put further pressure on Europe’s strained energy market, as natural ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

After a winter storm this weekend, the polar vortex will return, bringing subzero temperatures to around 80 million people ...

A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the Arctic. But when there’s a wobble in the rotation, winds in the vortex can ...

A big reason is we have another lobe of the Polar Vortex that is going to shift south into far southern Canada. This lobe of ...

A week-long, polar vortex-related Arctic outbreak rivaling any seen so far this winter is slated to bring frigid conditions ...

According to the Severe Weather Europe website—an online resource of global weather forecasts—a mass of cold air, spurred by the polar vortex, has been forecast to move over Canada and the northern ...

The polar vortex might be considered the jet stream’s upstairs neighbor in the wintertime. It appears in September, when a seasonal lack of sunlight begins to make it cooler inside the Arctic ...