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

The greater Philadelphia region will experience no weekend letup in the prolonged cold snap gripping the area.

Winter Storm Fern aftermath continues as the East Coast braces for a bomb cyclone and polar vortex, with heavy snow and ...

Bucks County may have missed the brunt of the weekend's bomb cyclone that walloped parts of the Northeast with snow and ice, ...

"This temperature difference, combined with a strong jet-stream disturbance that forces air upward, sets the stage for ...

Persistent polar vortex disruptions will funnel repeated rounds of arctic air and snow across the Eastern United States this ...

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

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

Delaware is likely to miss major impacts from the bomb cyclone, but freezing temperatures and high winds are still forecasted ...

Winter's brutal grip on the US East is not letting up, with the coming days bringing subfreezing temperatures that will ...

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms.

A powerful nor’easter will deliver a dangerous combination of heavy snow, frigid temperatures, strong winds and coastal ...