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 .

In January 2025, the winter weather in the US has been a lot more extreme than expected. Everyone is quick to blame climate change, but according to experts, there is something more specific at play.

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 ...

The unseasonable chill that has swept through the eastern half of the US defies last year's mild winters and the South's ...

This cold was certainly extraordinary, but the polar vortex event of January 2019 brought life in the northern and central United States to a frozen halt. At that time in our area, the coldest actual ...

Several Gulf states experienced a major snowstorm this week. Changes in global climate patterns can be connected to weird ...

A winter storm sweeping through the U.S. South on Tuesday was dumping snow at levels millions of residents haven’t seen ...

Wednesday will be another day of frigid temperatures, with a low of 2 degrees, as cold air from the polar vortex has moved ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...