Rader said divers were on the scene searching for passengers, but could not confirm how many were missing.
"Sustained winds over 40 mph, lightning, moderate rain and lowered visibility to as low as 2 miles may have contributed to this incident", said weather.com meteorologist Jonathan Belles. Dive teams are now searching for people who are still missing, Rader said. Weather reports said high winds hit the area at about 7 p.m.
He also said an off-duty sheriff's deputy working security for the boat company helped rescue people after the accident. Stay with us for further updates.
Boris Johnson warns Theresa May she must scrap Brexit plans
Johnson denounced the plan agreed as a " Brexit in name only" which would leave Britain in a state of "economic vassalage". She will also address a group of her backbench MPs this evening.
Winds of up to 60mph were generated by the heavy thunderstorms that rolled over the area.
"We are aware of a major incident that happened tonight on Table Rock Lake, and ask that you pray for those involved as well as law enforcement/first responders", the lake's visitors bureau said in a brief statement.
The company that builds ducks, Ride the Ducks International, agreed in 2016 to pay a $1.35 million fine after one of the vehicles collided with a bus in Seattle, killing five international students.
The boat was carrying 31 people, he said, and dive teams from various agencies are scouring the waters for potential victims. Most are surplus military vehicles originally built for use during World War II and the Korean War and heavily modified to carry passengers on land and sea tours.