Last Tornado 4th August 2012, late in the afternoon
No. No tornado stronger than F5 has ever been recorded.
The deadliest tornado ever recorded was in Sandwip island of the coast of Bangladesh in1989.
The largest tornado in Oklahoma (and in fact the largest tornado ever recorded), was the El Reno, Oklahoma tornado of May 31, 2013. It was 2.6 miles wide.
The Hallam, Nebraska tornado of May 22, 2004 was the widest tornado ever recorded. It was 2.5 miles wide.
Callander
No, there has never been a direct sell either.
No. The widest tornado ever recorded was half that: 2.5 miles wide.
The largest tornado ever recorded was the El Reno, Oklahoma tornado of May 31, 2013. This tornado was 2.6 miles wide. Doppler radar measured a wind gust in the tornado at 296 mph, the second highest wind speed ever recorded in a tornado.
no
yes
Florida is not in tornado Alley, but it does get a lot of tornadoes, but they are generally not as strong as the ones in Tornado Alley.
The house is invading the tornado's natural habitat, so of course the tornado will fight to keep its territory.