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The Fujita Scale was developed in 1971 by Tetsuya
Fujita as a way to
measure the intensity of a tornado - how much it eats. In 1999,
after the May 3rd tornado in Oklahoma, the Fujita Scale was
enhanced. The table below shows the new and enhanced scale.
| EF-0 |
Light Damage. Wind 65 to 85 mph.
Causes some damage to siding and shingles |
| EF-1 |
Moderate Damage. Wind 86 to 110 mph.
Considerable roof damage. Winds can uproot trees and
overturn single-wide mobile homes. Flagpoles bend. |
| EF-2 |
Considerable Damage. Wind 111 to 135
mph. Most single-wide mobile homes destroyed. Permanent
home can shift off of foundation. Flagpoles collapse.
Softwood trees debarked. |
| EF-3 |
Severe Damage. Wind 136 to 165 mph.
Hardwood trees debarked. All but small portions of houses
destroyed. |
| EF-4 |
Devastating Damage. Wind 166 to 200
mph. Complete destruction of well-built houses and large
sections of school buildings. |
| EF-5 |
Incredible Damage. Wind above 200 mph.
Significant structural deformation of mid and high-rise
buildings. |
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