The Rustic Barn, an event hall, which suffered major tornado damage, is seen from an unmanned aerial vehicle in Canton, Texas, April 30, 2017. [Photo/Agencies]

The storms caused floods in neighboring states, killing a 72-year-old woman in southwestern Missouri who was washed away in her car, according to local media reports.

In Arkansas, a woman was killed when a tree fell on her mobile home in DeWitt, and a 10-year-old girl was killed after flood waters swept her away in Springdale, ABC News reported. A fire chief responding to the storm was killed on Sunday in Cleburne County, the county sheriff said

At least two other people reportedly died in storm-related incidents, while two children were missing after their mother’scar was swept from a road by floodwaters in Madison County. As many as 100,000 homes and businesses lost power, and Gov. Asa Hutchinson declared a state of emergency on Sunday night.

In Mississippi, a person was killed after a tree fell on their house in Durant, ABC reported. The governors of Missouri and Oklahoma declared states of emergency.

In the St. Louis area, severe thunderstorms were forecast through Sunday. Some people were told to evacuate and 33 rescues were conducted, mostly in the state's central and southwestern regions, Missouri Gov. Eric Greitens said.

Reuters