At least four deaths are being blamed on the Arctic weather that is gripping much of the nation's midsection.
Authorities in Missouri say a one-year-old boy died today when the vehicle he was riding in crashed into a snow plow on an icy highway.
Firefighters in Indianapolis found the body of an elderly woman outside her home.
In northeastern Oklahoma, a 58-year-old man died when he lost control of his car on icy roads.
Finally, in Chicago, a 48-year-old man died of a heart attack last night while shoveling snow. The National Weather Service says this is a "historic and life-threatening cold outbreak" with wind chills of 40 to 60 below zero in parts of Montana, the Dakotas and Minnesota.
The weather has also caused the cancellation of more than 3,100 flights so far today, and the number is expected to rise. Sacramento International hasn't been immune either, where a number of flights have been cancelled and others delayed up to two hours.
If you are planning on making your way to the airport to pick up someone arriving or to fly out, you're advised to check to flight's status first.