This brings to memory another tragedy in Kansas from years ago. I knew someone who died in this incident from a relatively weak tornado.
The 1978 Whippoorwill tornado also known as the Whippoorwill Disaster was a tornado that struck on June 17, 1978. The tornado, which was on the ground for 8 miles (13 km), struck a tourist boat called the Whippoorwill, causing it to capsize and drowning sixteen out of the 58 passengers and crew.
1978 Whippoorwill tornado - Wikipedia