No. No tornado stronger than F5 has ever been recorded.
There is no such thing as an F7 tornado. The maximum rating is F5. Even then, ratings for tornadoes are based on damage, not size.
have not been found
Yes there has.
Yes. There have been a few.
No. The widest tornado ever recorded was half that: 2.5 miles wide.
No. A tornado is a violently rotating column of air. There is no air in space.
Yes, the state at least gets them every year. There has been at least one tornado in the Bronx.
Yes. Duncanville, Texas was hit by an F2 tornado on April 20, 1977.
Yes. Wolcott was hit by an F1 tornado on July 3, 1996.
Yes, tornadoes have been recorded in every month.
If there ever was one on the lake it would be a water spout not a tornado. Tornadoes are on land not water. A water spout is on the water.
I personally have not, but many people have.