00:48 Sioux Falls Tornado Rips Apart Building in Newly Released Footage Newly released footage from inside a health center in Sioux Falls shows the damage done by an EF-2 tornado that struck the city one year ago.

At a Glance Severe storms hammered the Southern Plains Wednesday night.

Two people died when a tornado struck Madill, Oklahoma, causing major damage.

A tornado in eastern Texas damaged dozens of structures, killed at least 3 people and injured at least 20 more.

Deadly tornadoes struck both Texas and Oklahoma Wednesday, killing at least 5 people and injuring more than 20 more.

The first struck southern Oklahoma, killing at least two people as severe storms fired up in the Southern Plains Wednesday evening.

Citing Marshall County Emergency Management, KXII.com reported two people were killed by a tornado that struck the town of Madill, Oklahoma. Emergency Management officials also told KFOR that one person was critically injured. Southwest of the town, vehicles were flipped and major damage was reported in the area of a J&I Manufacturing Inc. facility.

Marshall County Emergency Management Director Robert Chaney told the Associated Press that the tornado arrived as many employees were leaving the J&I facility for the day.

(MORE: Where Dangerous Storms Could Strike Next)

Madill, a town of about 3,800 residents, is located 100 miles southeast of Oklahoma City, near the Texas border.

Later Wednesday evening, at least one large tornado was reported in eastern Texas. The twister raked through Onalaska, Texas, a town of about 1,700 located 80 miles north of Houston, at about 6 p.m. CDT. At least three people were killed there when the tornado damaged dozens of homes.

Another "20-30" people were injured by the tornado, but officials were still combing the wreckage for victims as of late Wednesday night.

Louisiana Death Blamed on Flooding

South of Shreveport, officials in the town of Mansfield confirmed the death of a man who fell into a flooded drainage ditch and was swept away at about 5:30 p.m. CDT Wednesday evening , according to the Shreveport Times.

Flooding trapped several other Mansfield residents in their homes, prompting rescues, the report added.

"There was some pretty extreme flooding here in Mansfield," DeSoto Parish Sheriff Jayson Richardson told the Shreveport Times. "Water like I’ve not seen in many, many years, if ever."

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