Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

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. Here's the forecast.

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...

After this weekend's snow storm moves out, cold Arctic air will move in.

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

In the wake of the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the polar ...

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.

The incoming Arctic blast will bring very cold temperatures to West Michigan, but it still falls short of the historic, ...