A winter storm sweeping through the U.S. South on Tuesday was dumping snow at levels millions of residents haven't seen before.

Temperatures in the South were colder than Flagstaff on Tuesday and more snow fell in some areas in one day than all winter in northern Arizona.

The cold temperatures are coming from a not uncommon expansion in the Polar Vortex, which are counter-clockwise rotating air currents that typically hang over the Arctic.

More than 170 million people across the United States, from the Mexican border to the Canadian border are under cold weather alerts ahead of a crippling winter storm expected to sweep through the south from Texas to Georgia,

At least 10 people have died. Officials warned that arctic cold will persist for another day, and roads could remain dangerous. Still, many Southerners found joy in the rare experience.

Long before Trump expressed interest in a name change, conquerors have battled to claim the wealth of its rich waters.

Mexican president says President Trump can call the gulf whatever he wants but that the world will still call it the Gulf of Mexico.

Among the first executive orders signed by President Trump was an order to rename the Gulf of Mexico as the "Gulf of America."

Some areas of New Orleans and Houston got more than four inches of snow Tuesday morning in a historic winter storm hitting the south.

A winter storm sweeping through the US South on Tuesday was dumping snow at levels millions of residents haven't seen before. Moisture from the Gulf of Mexico was combining with a low-pressure system and chilly air to drop significant amounts of snow in some spots.