Weather security

Millions gearing up for polar vortex, as temperatures plunge to lows not seen in a generation

It'll be a cold snap for the ages — the Ice Ages!

The East, the Midwest and even the Deep South, are bracing for a once-in-a-generation arctic blast that is forecast to leave 75 million Americans shivering in subzero temperatures, meteorologists said Tuesday.

By the end of Wednesday, 85 percent of the U.S. land area and 230 million Americans will experience temperatures of 32 degrees or colder, thanks to this extended polar vortex.

And 25 percent of America will get down to 0 degrees in dangerous cold that will touch 75 million U.S. residents.

"Historic cold, unprecedented cold, these are all adjectives you could use to describe this," NBC meteorologist Kathryn Prociv said.

This arctic blast will surely freeze the texting thumbs of younger Americans.