Indiana is track for the coldest January since 2014, but finally warmer air is moving in for the rest of the month. Enjoy ...

Why Polar Vortexes Are Becoming More Common What do you think about this topic? Share your thoughts in the comments below — ...

The director of Light of Life Rescue Mission in Pittsburgh's North Side blocked off 24 hours for those many conversations in frigid temperatures, taking a break only once, for about an hour overnight.

Anytime we get an Arctic air blast down this far south, this is an artifact of the polar vortex rearing its ugly head,” said climatologist Barry Keim .

C with the windchill but the worst is likely over. Environment Canada lifted its extreme cold warning with mid-day ...

The polar vortex, a natural atmospheric phenomenon, influences global winter weather by circulating Arctic air. Its expansion ...

When there are disturbances in which the Jet Stream weakens, it can become wobbly. This allows the cold air to plunge southwards. A disrupted polar vortex does not happen every year. Very much so what ...

It's something very weird and nuanced going on right now,’ says one expert about the potential reasons for the snow ...

Nearly 2,000 flights into and out of states impacted by Winter Storm Enzo have been cancelled today, as this rare storm ...

A rare winter storm has turned the South into an unlikely winter wonderland this week, giving cities like New Orleans more ...

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

Today, most of central Ohio experienced its coldest morning of the winter so far. Here’s a map of the observed temperatures ...