The weather system responsible for the dangerous conditions had remained fairly stationary since Monday, dumping freezing rain from Oklahoma and Texas to Missouri, Arkansas and Kentucky.
In parts of Arkansas and Oklahoma, the ice was three inches thick Tuesday night. In Tulsa, Okla., a mixture of sleet and snow covered highways with a layer of solid ice.
This morning, the storm has moved out of Tulsa, leaving behind roads and trees encased in ice, as well as continued power outages and low temperatures of 12 degrees. Schools in Tulsa were closed Wednesday for yet another day.
Though this week's storm is taking a toll, the nation has seen worse. During a winter storm in 2007, ice accumulated to 4 inches and 85 people lost their lives.
ABC News' Sam Champion, Ryan Owens and Eric Horng and The Associated Press contributed to this report.