At least 11 people have been killed in crashes caused by ice-coated roads in Oklahoma as a winter storm spreads ice and freezing rain from the southern Plains to the Northeast. A single pile-up involving 11 cars and trucks on Interstate 40 in Oklahoma killed four people.
The ice has also brought down power lines and snapped trees in a number of states. Oklahoma again seems the hardest hit, with an estimated 300,000 customers without electricity today.
Ice storm warnings and other watches and advisories extend along a cold front that stretches from Texas to New Hampshire.
Many schools across upstate New York are closed or got a late start today because of the icy roads.
Airports across the Midwest report flight cancellations and dealys because of the wintry mix.