Reported tornadoes struck northwest Texas on Thursday, damaging homes and power lines but missing the city of Lubbock, which remained under a severe thunderstorm and flash flood warning late into the evening.

The severe weather was part of a pattern that was expected to persist from the southern Plains to the Southeast through the weekend, bringing the risk of large hail, damaging winds and flash flooding.

More than 13,000 customers suffered power outages in Lubbock and Hockley counties, according to PowerOutage.us. Tornadoes touched down in several towns, damaging homes in rural communities and causing at least three injuries, said Cole Kirkland, the Hockley County emergency management coordinator.

Scores of homes were damaged by hale and wind in Hockley County, Mr. Kirkland said, and most of the county’s roads were flooded.