A winter storm in the US has brought deadly freezing winds, ice and snow to many regions that rarely see such frigid conditions.
In Texas, a surge in demand for electricity has led to widespread power cuts. The state is bracing for another icy storm later on Tuesday.
The National Weather Service (NWS) said more than 150 million Americans were now under winter storm warnings.
At least 11 deaths have been blamed on the widespread storm.
Deaths have been reported in Tennessee, Texas, Kentucky and Louisiana.
In North Carolina, a tornado spawned by the same storm left three dead early on Tuesday morning. ENDS