F4 and F5 are the two strongest categories of tornado on the Fujita Scale.
The Fujita scale rates tornadoes from F0 to F5 by the severity of damage done.
An F4 tornado will level most houses and strip the bark from trees.
An F5 tornado, with winds than can exceed 300 mph, will completely annihilate a well built house and sweep it clean off its foundation. Cars and even houses can be thrown hundreds of feet.
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It a sequence of numbers beginning with 0 and 1 where each number is the sum of the two preceeding numbers. F1 = 0 F2 = 1 F3 = F2 + F1 = 1 + 0 = 1 F4 = F3 + F2 = 1 + 1 = 2 F5 = F4 + F3 = 2 + 1 = 3 F6 = F5 + F4 = 3 + 2 = 5 etc.
esc, f1, f2, f3, f4, f5, f6, f7, f8, f9 :)
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If you mean other countries, then yes.Tornadoes have been recorded on every continent except Antarctica. Countries besides the U.S. that have a high incidence of tornadoes include Canada, Australia, Bangladesh, Argentina, and South Africa.
PRESS ALT AND F4 AT THE SAME TIME