WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way ...

The term "polar vortex" has gained popularity in recent years, but the phenomenon itself is not new. According to the U.S. National Weather Service, the polar vortex refers to the counterclockwise ...

Montrealers awoke Saturday to the first wave of frosty temperatures expected to last into the coming week. Despite the ...

Our observed minimum wind chills from Friday morning ranged from -20° to -30°! We’re not done yet! Friday’s actual temperatures could fall below -15° for some.

Mike Flanagan of Trethewey Brothers, Inc., says keeping your thermostat turned high during the coldest days is important, and ...

The Toronto area is dealing with a cold snap. Temperatures plummeted in many areas, with Toronto feeling like -24 on Tuesday and as Caryn Lieberman reports, the bitter cold is sticking around.

A severe Arctic freeze gripping the United States has claimed at least 30 lives, including seven people who died in a plane crash Sunday night, according to ...

A stretched polar vortex will bring subzero temperatures and heavy snow to 230 million Americans. Michigan utility customers ...

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of ...

Aetherlux Pro Operates to –57°F Without Defrost Cycles or Backup Heat, Addressing Grid Stress and Soaring Energy Costs Terravis Energy (“Terravis” or the “Company”), a subsidiary of New ...

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.