The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic cold.

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

The series of Arctic outbreaks, of which at least three are expected, will likely surge south out of Canada into the Plains, ...

Surge protectors have been documented to start house fires when they wear out. Here's how long they last and why your weather ...

Get ready for below-seasonal temperatures to spill across Canada from coast to coast to end the month of November The season’s first significant and widespread outbreak of cold Arctic air will spread ...

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps. Every year around this time, that phrase — “polar vortex” — starts to buzz ...

A storm system is expected to bring rain and a blast of cold air to Oklahoma around Thanksgiving week. A rare stratospheric warming event could weaken the polar vortex, potentially sending colder ...

A storm system will move through Oklahoma on Tuesday night, Nov. 25, bringing rain across the region. The real story comes behind it: a blast of cold air sweeping in, dropping temperatures sharply and ...

An extreme warming event high in the atmosphere is threatening to disrupt the polar vortex. We break down what that could mean for Canadians A rare, early, stratospheric warming event could shake up ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...