A major winter storm is working its way across the nation's heartland, with 20 states under winter storm watches or warnings.
On Thursday, meteorologists warned the system is moving east and it's bringing more snow, ice, and in some places, even tornadoes.
Residents in the region are stocking up on last minute supplies, bracing for up to a foot of snow.
"Everybody's getting ready and the lines are pretty long," one Midwest resident said.
The massive snowstorm started in California, with a mix of rain, snow, and gusty winds, making driving conditions dangerous.
"I was trying to go down the street from my house and I started to go sideways down the hill," one motorist recalled.
"After we got hit, we hit a car and then at least seven or eight cars hit us," another driver said.
Officials in the Midwest fear this could be the worst storm in the nation's heartland in two years.
Further to the south, severe weather is possible. Forecasters predict tornadoes Thursday across Texas, Louisiana, and Mississippi.
It's the second major storm to hit this winter, but global warming advocates say the huge amounts of snow actually prove the earth is heating up.
A new study from Princeton University predicts global snowfall will shrink more than a foot over the next 50 years. But when it does snow, watch out.
"Every once in a while there's going to be a big storm, a kind of knock-out punch," Prof. Michael Oppenheimer, with Princeton University, said.
Climatologists claim this is because a warmer atmosphere can hold more moisture.
They predict most of that will come down as rain. But when it gets cold enough it will turn into monster snow storms.
"So get out your snow shovels," Oppenheimer said. "Snow storms with two or three feet that used to seem highly unusual, that may in fact become more typical."
Meanwhile farmers across the plains welcomed the winter weather. More snow means much needed moisture for the drought-scorched region.