Danielle Nottingham / CBS News

A major storm system is promising to bring snow, sleet and possibly some Christmas Day tornadoes to the Nation's mid-section.

There are winter storm warning stretching from Oklahoma to Pennsylvania. Some parts of upstate New York and Pennsylvania could see 1 to 2 feet of snow. Big cities like New York and Boston could see wind gusts of up to 60 miles per hour.

And in the Southeast, the largest tornado threat ever seen on Christmas day was brought on by the winter storm coming from the West, mixing with the warm waters of the Gulf of Mexico.

'Severe thunderstorm warnings are ongoing and the reason for it is we have a lot of energy in the atmosphere and what that's causing is a potential for a widespread severe weather outbreak,' meteorologist Jeff Beradelli said.

All this severe weather is complicating travel plans, just as millions are set to return home. Many may be forced to spend the end of their Christmas Holiday in an airport terminal.

And driving may not be an option. The National Weather Service says parts of Arkansas could get up to 10 inches of snow, causing white out conditions, making traveling nearly impossible.

This storm is part of the same system that dumped more than four feet of snow in the high sierras of California just a few days ago.

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