Residents across the South on Sunday were digging out from a barrage of heavy rains, wind storms and tornadoes that left several people dead and tens of thousands without power over the weekend. The storms were part of weather systems that also disrupted travel across wide swaths of the Midwest, iced up roads in Texas and Iowa and brought unseasonably mild weather to much of the Northeast.

In Pickens County, Ala., a tornado with winds around 130 mph, killed three people after it touched down at 10:30 a.m. Saturday, said Lakitha Bell, the county’s emergency management agency director. A total of 18 homes were destroyed, and several people were injured. The dead included an elderly couple and a 51-year-old man, all of whom were in their mobile homes when the tornado struck. “It’s devastating here,” Ms. Bell said. “It’s heartbreaking to see how many lives can be impacted so fast.”

The storms knocked out power to more than 300,000 customers across the South, according to PowerOutage.US, which collects live power outage data from utilities across the country.A severe winter storm that traveled through Texas and across the Midwest was also blamed for more deaths, including two in Lubbock, Texas, Saturday morning when a car slid off an icy interstate.