That is difficult to determine. There have been many thousands of F0 and EF0 tornadoes with winds possibly as low as 40 mph. However it is difficult to determine which were the weakest as many took place in open fields and caused no damage and all but perhaps a few never had their winds measured. Even then, it could be debated whether a tornado with winds as low as 40 mph could actually be counted as a tornado as such winds usually cannot cause significant damage.
The lowest known pressure recorded in a tornado was 688 millibars in a tornado in Tulia, Texas on April 21, 2007.
The weakest category on the Fujita scale is an F0. However, there have been thousands of F0 tornadoes and there is no real way of determining if any one of them was weaker than all the rest.
The largest tornado ever recorded, the Hallam, Nebraska tornado, struck in 2004, so about 6 years ago.
The Hallam tornado was a massive F4 tornado that destroyed much of the small town of Hallam, Nebraska on May 22, 2004, killing 1 person. The tornado is notable in that at one point it was 2.5 miles wide, making it the largest tornado ever recorded.
It is impossible to say when the first ever tornado was, as they have been occurring since long before there were people around to record them. The first recorded tornad struck near Kilbeggan, Ireland on April 30th, 1054.
The Hallam, Nebraska tornado of May 22, 2004 was the widest tornado ever recorded. It was 2.5 miles wide.
No. No tornado stronger than F5 has ever been recorded.
the tornado was recorded in kilbeggan Ireland in Europe on April 30th 1054
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 Highest wind speed ever recorded in a tornado was 302 mph (some sources say 318 mph) in the F5 tornado that struck Moore and Bridgecreek Oklahoma on May 3, 1999. This tornado is sometimes referred to as the Oklahoma City tornado
The deadliest tornado ever recorded was in Sandwip island of the coast of Bangladesh in1989.
Hattiesburg
The largest tornado ever recorded was 2.6 miles wide.
No. The widest tornado ever recorded was half that: 2.5 miles wide.
The lowest known pressure recorded in a tornado was 688 millibars in a tornado in Tulia, Texas on April 21, 2007.
The longest tornado path ever recorded was 219 miles long.
No. Florida has never recorded an F5 or EF5 tornado.