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.

Much of the U.S. from the Rockies into the Northern Plains will see colder than normal temperatures starting Sunday into the ...

Millions of people across the northern Gulf Coast braced Tuesday for a rare winter storm that’s expected to scatter heavy ...

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

An Arctic air mass, sometimes known as a Siberian Express, is expected to move over Michigan by Sunday and will leave ...

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Tens of millions of residents along the East Coast are bracing for several inches of snow Sunday followed by dangerously cold ...

NEW ORLEANS -- The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...