"We did have a severe thunderstorm, not sure if that is the contributing factor," Southern Stone County Fire Protection spokesman Eric Nielsen was quoted as saying by KTXL-TV broadcaster. "There is a lot of storm debris," Nielsen added.
According to NBC News, at least eight people were killed and many more remained unaccounted for when a tourist boat capsized and sank during high winds on a Missouri lake.
The incident reportedly occured at 7 p.m. local time as severe storms generating winds up to 60 mph buffeted Table Rock Lake.
"It will be a challenging night and into tomorrow," Stone County Sheriff Doug Rader was quoted as saying by NBC News, adding that at least seven people were being treated at local hospitals.