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

The polar vortex is a large-scale weather pattern that typically keeps the coldest air confined to the Arctic region. However, during winter months, this vortex can become unstable, leading to ...

The jet stream, or any wind, is the result of differences in surface temperature. In simple terms, warm air rises, creating low pressure, and cold air sinks, creating high pressure. Wind is the ...

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens ...

Storms headed to New England late Wednesday will bring mostly rain to Boston and Southern New England, with snow up north.

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