More than 99% of CenterPoint Energy's Houston-area customers maintained power through the freeze, and ERCOT didn't order rolling outages.

A rare winter storm churned across the U.S. Gulf Coast on Tuesday, breaking snowfall records more than a century old in a southern region where flurries are unusual, as much of the United States remained in a dangerous deep freeze.

Here's a look at snowfall totals from Tuesday's winter storm that blanketed Houston and parts Louisiana in multiple inches of the white stuff.

While Iowa is recovering from a cold snap with negative 30 wind chill, the state is running about 20 to 30 inches below average for seasonal snowfall.