A state of emergency has been declared in Texas amid widespread power cuts as a winter storm blankets the US state in snow and ice.
With temperatures falling to below -10C (14F), the state's power grid failed when it could not cope with the demand for electricity.
Rotating power outages have been put in place by the grid operator to reduce demand on the electricity system, leaving millions of people without electricity.
Bob Daemmrich / Alamy
Snow around the State Capitol Building in the state capital, Austin
Texas is currently enduring its coldest weather in more than 30 years.
Mark Felix / AFP
The National Weather Service (NWS) said more than 150 million Americans were living under winter storm warnings with Kentucky, Mississippi, Alabama and Oklahoma among the states affected
The extreme weather has led some food stores and schools to close.
Ron Jenkins / Getty Images
In Fort Worth, Honey Russell shovels snow outside her home
There has been chaos on the roads, with drivers unused to the treacherous conditions.
Montinique Monroe / Getty I,ages
In Austin, residents join forces in an attempt to get a car moving
The cold snap is expected to last several more days.
Mark Felilx / AFP
A man manages to sledge down a slope in Houston despite there being only a thin layer of snow
Mark Felix / AFP
Perhaps not the world's most impressive snowman
Ron Jenkins / Getty Images
In Fort Worth, Megan Pennartz and her dog Jensen have plenty of snow to enjoy
Cities like Austin are not used to getting snow and have few resources to clear the roads.
Montinique Monroe / Getty Images
The weather also brought traffic congestion to Austin
Montinique Monroe / Getty Images
Pedestrians carefully make their way along snow-covered streets
Mark Felix / AFP
A Valentine's Day balloon floats past footprints in the snow in Houston