The polar vortex has taken on an unexpected pattern this winter - one that’s made part of the United States the most ...

The United States has been at the epicenter of the planet’s most unusually cold conditions early in 2025. The polar vortex is ...

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

The sudden winter chill came thanks to the polar vortex, an area of low pressure and cold air in the Arctic near the North ...

The polar vortex’s icy grip on much of America has Arctic Greenland seeming like a toasty vacation spot by comparison ...

For most of January there was a lack of snow for cross country skiing, or else near zero temperatures and wind chill factors ...

Large parts of the United States and Canada are in the grip of frigid winter weather, with a surge of polar air pushing subzero temperatures and dumping snow down over much of North America. The US ...

Arctic cyclones may be accelerating sea ice loss by breaking ice into smaller pieces and driving upwelling of warm water. A ...

During each liftoff and landing, several factors are in play affecting the intensity and duration of each sonic boom.

A bitter blast of Arctic air is roaring south across the central U.S. Tuesday, bringing with it record cold temperatures and ...

The US faces severe cold weather, with the National Weather Service forecasting life-threatening conditions and ...

But at times some of the vortex can break off or move south, bringing unusually cold weather south and permitting warmer weather to creep up north.