The upcoming midweek storm is one of several systems that promises to bring precipitation and eventually the month's coldest ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

Washington, D.C., received heavy snow as President ... It’s like an ice skating rink out there in the fields.” The polar vortex of ultra-cold air usually spins around the North Pole, but ...

The jet stream is like a river of west-to-east winds in the upper atmosphere. Airplanes use it like a highway.

The D.C. area is wrapped up in a polar vortex, and this cold weather can ... Kevin Brasler, executive editor with Washington Consumers’ Checkbook, said shut off any outdoor faucets if you ...

"Intense lake-effect snow bands, which have pockets of rapidly rising air due to the sharp contrast between cold air aloft and the warm lake water, often produce thundersnow," AccuWeather senior ...

As the polar vortex delivered what is expected to be its final blast across southern Ontario on Wednesday, city residents braved the bitter cold — including Fintan the lion at the Toronto Zoo.

President-elect Donald Trump's second inauguration will mark the coldest presidential ceremony in more than 40 years. Washington is forecast to reach only the mid-20s for a high temperature, along ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures ...