The Enhanced Fujita Scale or EF Scale, which was made on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
EF0:
An EF0 tornado has max wind speeds of 65-85 mph. Typically with an EF0, damages include tiles or parts of roof being blown off, gutter and siding damage, branches broken off trees (quite large ones) and trees that fall over as a whole; however this is normally a weak or dead tree.
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As you can see in this image there is only really branches and trees that have fallen in the yard.
EF1:
Between 35-40% of all tornadoes yearly in America are rated EF1 damage: winds from 86-110 miles per hour can cause major damage to camper vans and automobiles, and can cause minor damage to well-constructed homes.
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Occurred July 10th 2013.
This house has had quite a lot of the right side roof torn and side of the house damage but it's nothing major.
EF2:
EF2 produce winds from 111-135 miles per hour. There may be considerable damage. The entire roof of a home may be torn off. Exterior doors can be blown off and windows could break.
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A whole part of this house has been torn off...this won't fix easily.
EF3:
An EF3 tornado has wind speeds between 136-165 miles per hour. Damage from an EF3 tornado may be severe and can include entire stories of homes being blown off and the first floor walls of a home toppling down. A detached garage may go flying through the air as well.
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The roof and part of the third story has completely been ripped off. Cars have also been flipped over
EF4:
A tornado rated EF4 has winds from 166-200 miles per hour. It may cause extreme damage. Some homes may be removed from their foundation and completely destroyed.
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This is very sad to see..you can't even tell what you're looking at.
EF5:
An EF5 tornado can rip well-anchored homes off their foundations, leaving them bare; even deforming large skyscrapers. It has winds speeds of over 200 miles per hour.
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