The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

Arctic air has brought chilling temperatures as low as 12 degrees in New York City on Monday night but are we in a polar ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout ...

Arctic air moved south, into the area starting late last week and has lingering since. This has lead to dangerously cold ...

Most of the current cold snap, which swept in a few days ago, should have passed, but temperatures remain dangerously low.

People in Texas and much of the U.S. South are facing record snowfalls and icy conditions, with both New Orleans and Houston ...

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

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

Parts of the Gulf Coast measured a foot of snow on Tuesday. For many cities the totals obliterate long-standing snowfall ...

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