Eleven people have been killed in tornadoes in Texas, police say, raising the death toll to 29 in a week of storms across several US states.
At least eight people died in Garland, near Dallas, five of them when their cars were blown off a motorway. Three bodies were found in other towns.
Officials also say west Texas and New Mexico could suffer major blizzards, bringing up to 16 inches (41cm) of snow.
The storms across the South have been unusually powerful for winter.
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