Tennessee, along with most of the lower 48 states ... The polar vortex is a gigantic, circular area of cold air high up in the atmosphere that usually spins over the north pole. It's a normal pattern that's stronger in the winter and usually tends to ...

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.

Some areas could see up to an inch of snow, especially in the mountains or in far northeast Tennessee. There is a possibility ... When a polar vortex arrives, it brings frigid winds from the north pole deep into the United States. The cold air can settled ...

Tennessee, along with most of the lower 48 ... circular area of cold air high up in the atmosphere that usually spins over the north pole. It's a normal pattern that's stronger in the winter ...