F5 tornadoes cause total devastation. Well constructed houses are wiped clean off their foundations and steel reinforced concrete structures are heavily damaged. In addtion, many F5 tornadoes are quite large, so major damage can cover entire neighborhoods.
A F6 tornado does not exist on the Enhanced Fujita scale, which ranges from F0 to F5. The most powerful tornado category, an F5 tornado, has wind speeds exceeding 200 mph and can cause catastrophic damage.
In most cases an F5 tornado will be larger than an F1. However, tornado ratings are a measure of the strength of a tornado, not its size. F5 is the strongest category, and such tornadoes are usually very large, but a few have been fairly small. Conversely, F1 is the second lowest rating (F0 is the lowest) and such tornadoes are generally small, but some have been huge.
F5 is the strongest category of tornado which rates tornadoes from F0 to F5 based on damage. An F5 tornado can sweep a house clean off its foundation.
An F5 tornado does not form directly from an F1 tornado. Tornado intensity is determined by the Enhanced Fujita Scale based on wind speeds and damage. It is possible for a tornado to rapidly intensify due to various atmospheric conditions, leading to an increase in intensity from an F1 to an F5 tornado.
Amazingly, there were no deaths in the Elie tornado, which is unusual for an F5. The one house which suffered F5 damage was unoccupied at the time it was struck.
Generally yes, by the wind estimates of the original Fujita scale winds over 260 mph are in the F5 range. However if such a tornado goes across open country and so does not cause F5 damage it would likely be given a lower rating.
The severity of the damage. It is a common misconception that it measure wind speed, but in truth, wind speed estimated based on the damage.
There is not given size for an F5 tornado as ratings are based on damage rather than size. Typical F5 damage is well constructed houses blown clean off their foundations.
There are theoretical categories beyond F5 but none of theme have ever been used. Since F5 damage is total destruction there is no real way of rating a tornado higher than F5. Also, a tornado's rating is not dependent on its size. So a bigger tornado does not necessarily get a higher rating.
Damage photographs from the Tri-State tornado show large areas that were completely leveled, with some neighborhoods swept away. That is a strong indicator that the tornado was an F5.
F4 and F5 are the two strongest categories of tornado on the Fujita scale. A damage based scale which rates tornadoes from F0 to F5. An F4 tornado will reduce most houses to piles of rubble. An F5 tornado will completely annihilate almost any house and wipe it clean off its foundation. Winds in an F5 can exceed 300 mph.
It would be difficult to say, since the highest rating a tornado can receve is F5. In F5 damage, nbearly all structures are completely destroyed. House-sized structures are completely blown away. If a tornado were to theoretically attain F6+ intensity, it would be difficult, if not impossible to distinguish from an F5, as F5 damage is already total destruction.