At least 13 people were killed and dozens more injured as tornado-spawning thunderstorms rampaged across Texas, Oklahoma and Arkansas on Saturday.

Seven people died in Cooke County, Texas, including two children ages 2 and 5, authorities said. A tornado tore through a mobile home park in the county.

“It’s just a trail of debris left. The devastation is pretty severe,” Cooke County Sheriff Ray Sappington told The Associated Press.

Dozens of people sheltered at a highway truck stop in the small town of Valley View as the storm rolled through the largely rural county north of Dallas near the Oklahoma state border. They escaped without injuries, Sappington said.

In Oklahoma, two people died in Mayes County, about 40 miles east of Tulsa, according to the county’s emergency management office. The details of their deaths were not reported.

And in northern Arkansas, one person was killed in Benton County and another person died in Boone County, officials said. Emergency crews were still responding to calls for help and authorities warned the death toll — up to four across the state — might rise.

“We are still on search and rescue right now,” Boone County communications director Melody Kwok told The Associated Press. “This is a very active situation.”

The storms covered a massive swath of Texas, Oklahoma and Arkansas, with homes suffering damage as far south as the Dallas suburbs and as far north as Tulsa, a nearly 250-mile span. Cars and tractor-trailers were overturned, and mobile homes were upended.

As the storms moved east into Sunday afternoon nearly 200,000 people were without power across Missouri and Arkansas, while 180,000 homes and businesses were in the dark in Kentucky, according to Poweroutage.us.

The start of the Indianapolis 500 was delayed for hours due to the storms, and authorities ordered the evacuation of the massive Indianapolis Motor Speedway.

With News Wire Services

It’s no secret that a cut-throat work environment hurts people and productivity, and a positive workplace helps both — as well as customer relations and the bottom line.

Are you lucky to work in a good place? Or know of one?

Actually, luck has little to do with it. It takes work, engagement and mutual trust. The Oklahoman wants to honor top workplaces in the state. Help us recognize business leaders and organizations that excel in both work and workforce. Anyone can nominate a company, including business leadership, employees or even customers.

Businesses have to change, and change again, to survive, especially in the age of artificial intelligence and real potential tension among different kinds of people. But not every company has a culture that stands out, let alone one worth bragging about.

Top Workplaces will highlight some of the best things happening in Oklahoma business. This is our 12th year of doing the program here at The Oklahoman.

Which companies stand out? Which companies are the best places to work? Which companies exhibit bold leadership?

If you know of an Oklahoma business that fits these kinds of descriptions, consider nominating it for our annual Top Workplaces award. If you work for a great company, we want to know about it. Tell us why it is so great. Let us help share your story with others.

More: These 5 companies made The Oklahoman’s Top Workplaces for more than a decade

Organizations with 35 or more employees in Oklahoma are eligible to participate. They can be public, private, nonprofit or government organizations. The nomination deadline is July 12. The Oklahoman will feature the winners in December.To nominate an employer or for more information on the awards, go to www.oklahoman.com/nominate or call 405-708-6151. There is no cost to participate.

To qualify as an Oklahoma Top Workplace, employees evaluate their workplace using a short 24-question survey that takes about five minutes to complete.

The Oklahoman is partnering with Philadelphia-based Energage, the employee research and culture technology firm, to determine Oklahoma’s Top Workplaces, based solely on employee survey feedback.

Energage conducts Top Workplaces surveys for media in 65 markets nationwide and surveyed more than 2 million employees at more than 8,000 organizations in the past year.

“Top Workplaces awards are a celebration of good news,” said Eric Rubino, Energage CEO. “They exemplify the significance of a people-first workplace experience, reminding us that employees are the heart of any thriving organization.

Plenty of workplaces do great work even facing great challenges. Tell us about them. Help us show who is worthy of Top Workplaces recognition.