Thunderstorms with strong winds, heavy rain and a possible tornado uprooted trees, toppled power lines and damaged buildings in parts of Texas, officials said.
No injuries were reported from the storms Friday night and early Saturday.
In Waco, much of the damage appeared to be concentrated in an industrial area, where winds gusting at an estimated 80 mph (128 kph) peeled off warehouse roofs and crumbled the walls at a Coca-Cola Co. bottling plant.
About 22,000 Waco residents still lacked power Saturday morning, said city spokesman Larry Holze.
An expert was en route to determine whether a tornado or just strong winds caused the damage, said National Weather Service meteorologist Ted Ryan.
In San Antonio, motorists stranded in high water had to be rescued, reports AP.
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