Strong winds, frigid temperatures, and snowfall moved across several states during the course of the last few days, and for many, this latest storm marked the first impactful snow of the season. Until ...

It’s been a warm winter in Denver so far, but this week is about to get cold. Local and national forecasts are throwing around terms like “polar vortex,” “arctic cold front” and “major winter storm” ...

Explore the dramatic weather patterns in the US, with the East experiencing extreme cold and the West enjoying unseasonal warmth, driven by a contorted polar vortex.

The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...