Rare U.S. deep freeze kills at least 21
The brutal winter weather across the southern United States has now killed at least 21 people, left millions without power and spun tornadoes in multiple states.
Four of those were killed in a house fire, with other deaths linked to the bitter cold.
Officials have warned people not to bring grills or propane heaters indoors, after carbon monoxide poisoning killed at least two people and hospitalized several others.
As an Arctic air mass pushed temperatures to historic lows on Tuesday, several facilities opened their doors as warming centers, as volunteers rallied to help.
The rare deep freeze has also forced the closure of some COVID vaccination centers.
Officials in Texas have drawn some criticism, as the power grid repeatedly failed, forcing rolling blackouts, partly because wind turbines were frozen still.
The treacherous weather is expected to grip much of the country through Friday.
An approaching storm will likely bring more snow, ice and sleet from the Texas panhandle through Kentucky and up through Washington D.C. to New York City, New Jersey and Boston.
