Up to 200 million face mammoth Midwest, Northeast winter storm! Brave U.S people!

Larry Wittmers, a hypothermia expert at the University of Minnesota-Duluth medical school, said it's not necessarily the coldest areas that face the most peril.
"True hypothermia cases turn up more often in more southern regions because people are not prepared and don't know what to do," Wittmers said.
How long people can safely spend outside depends on how wet or windy it is and how they are dressed, Wittmer said. Shoveling snow or other exercise can be dangerous because sweat reduces the insulation capability of clothing, and consuming alcohol can speed heat loss and reduce awareness of the cold.
And even though record snowfall is not expected, the cold could make roads even more hazardous because the snow-melting salt that homeowners and road crews use loses effectiveness at between 10 and 20 degrees.

A large winter storm moving across the nation already has forced the cancellation of several flights. Rail delays and dangerous road conditions also are expected. NBC's Tom Costello reports.
At a suburban Philadelphia landfill Thursday, a man was killed after the "salt machine he was operating was crushed by an 100-foot tall pile of salt, NBC Philadelphia reported.