OKLAHOMA CITY — Twelve days after a tornado killed 24 people and destroyed hundreds of homes, this battered city and its surrounding suburbs awoke Saturday morning to the aftermath of Round 2. A storm on Friday set off tornadoes and severe flooding, causing widespread damage around the region and claiming at least nine victims, including two children.

None of the tornadoes that touched down were as powerful as the one that tore through much of Moore, Okla., on May 20. But the high winds, hail and heavy rain — a total of roughly eight inches in a few hours — wreaked their own sort of havoc on Oklahoma City and suburbs to the west, overturning tractor-trailer rigs, stranding motorists on flooded streets and interstate highways and sending passengers at Will Rogers World Airport in Oklahoma City into underground tunnels to seek shelter.

Tens of thousands remained without power as the storm moved through Arkansas, Missouri and Kentucky, claiming at least three additional lives.

Oklahoma officials said a woman and her child who appeared to have been caught in the storm on Interstate 40 west of Oklahoma City were among the dead. Even towns far east of Oklahoma City, like Henryetta, 90 miles away, were drenched in a storm that produced hurricane-like effects.