Earth’s magnetic north is not static. Like an anchorless buoy pushed by ocean waves, the magnetic field is constantly on the move as liquid iron sloshes around in the planet’s outer core.

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

In the 1990s, a single moratorium announcement wiped out an entire industry, leaving 37,000 people unemployed overnight. The ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

The polar vortex is an enormous ring of powerful winds spinning above the North Pole. It normally circles the Arctic and it typically stays contained by a strong jet stream, but when this ring of ...

The polar vortex is always around. It is a channel of strong winds high up in the atmosphere that circles the poles. One over ...

The polar vortex, a band of strong winds that circles the North Pole, will send a blast of arctic air to Texas. The good news is the center of the polar vortex is staying in Canada. It is not coming ...

The polar vortex, or Arctic polar vortex, is a ring of strong westerly winds that form between 10 and 30 miles (16-48km) above the North Pole every winter, enclosing a large pool of extremely cold ...

If you thought last week was cold, hold onto your hot lattes and be ready to bundle up as (another) winter storm is forecast to plunge arctic air deep into the Deep South by early next week.