A tornado rips through a residential area after touching down south of Wynnewood, Okla., on May 09, 2016.
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At least two killed as violent storms and tornadoes sweep across the Plains

Updated
At least two people, one of them an elderly man, were killed Monday when severe storms and tornadoes tore through south-central Oklahoma, authorities told NBC News — part of a severe storm system that raced across the Plains.

The man, who wasn’t identified, was killed when a large, fast-moving tornado swept through Garvin County, said Bud Ramming, the county’s emergency management director. The tornado destroyed several structures, overturned vehicles and tore limbs from trees.

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The “large and extremely dangerous” tornado also trapped six people under debris south of the town of Wynnewood in Garvin County, the National Weather Service said. The agency reported that multiple homes were destroyed between Elmore City and Interstate 35.

A second person, also unidentified, was killed in a storm-related incident in the Connorville-Bromide area, the Johnston County Sheriff’s Office told NBC News. Details weren’t immediately available.

The tornado was one of several spun off by a violent weather system that the National Oceanic and Atmospheric Administration’s Storm Prediction Center warned could create more twisters with wind speeds above 100 mph from eastern Oklahoma to central Arkansas into the evening.

Tornadoes were also reported near Oklahoma City, in a rural area south of the city, in southeastern Lincoln, Nebraska, and near Odessa, Nebraska, according to the National Weather Service. One of them spit up a debris cloud 1½ miles wide. No injuries were immediately reported.

The Nebraska tornadoes were accompanied by large hail — up to 4¼ inches in diameter in Lincoln. Hail larger than 2 inches in diameter was forecast from eastern Texas to southeastern Kansas.

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At least five people were injured and several buildings were damaged Saturday when a tornado hit the eastern Colorado town of Wray, about 12 miles from the Nebraska border.It’s all part of a single giant storm system that dropped tornadoes and massive hail from Kansas to Oklahoma and Colorado over the weekend.

The system is expected to weaken sharply as it pushes east overnight, forecasters said. But it will still cause heavy showers and thunderstorms from the Ozarks into the mid-Mississippi and Ohio valleys, according to The Weather Channel.

This story originally appeared on NBCNews.com.

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At least two killed as violent storms and tornadoes sweep across the Plains

Updated