Sudden stratospheric warming is expected to keep a weakened vortex splintered, plunging the region back to record-breaking ...

Punxsutawney Phil has spoken, and apparently his shadow isn't just calling for six more weeks of winter — it's also taking a ...

The bitter cold temperatures that have left a chill over the eastern half of the country aren’t going anywhere, as a major disruption to the Polar Vortex is coming this month.

The bitter cold temperatures that have left a chill over the eastern half of the country aren't going anywhere, as a major disruption to the Polar Vortex is coming this month.

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

Climate deniers are quick to say 'I told you so' when the mercury drops. But a warmer planet impacts weather in ways that can ...

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.

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

Winter storms swept through a large swath of the U.S. this weekend, bringing heavy snow, ice, and freezing temperatures, and leaving homeowners, drivers, and businesses to contend with property damage ...

“The polar vortex is being elongated by a wave in the upper atmosphere that goes back to a relatively ice-free part of the ...

Strong winds, frigid temperatures, and snowfall moved across several states during the course of the last few days, and for ...

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