Number
Wind speed range
Damage level
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| The Fujita Tornado Scale was developed by T. Theodore Fujita in the late 1960's. It continues to be used today as the primary method for classifying the strength of tornadoes. | ||
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Number |
Wind speed range |
Damage level |
| F-0 | up to 72 mph (116 kph) | light: broken tree branches. |
| F-1 | 73 to 112 mph (117 to 180 kph) | moderate: broken trees and windows. |
| F-2 | 113 to 157 mph (181 to 253 kph) | considerable: large trees uprooted and weak buildings destroyed. |
| F-3 | 158 to 206 mph (254 to 332 kph) | severe: stand of trees completely destroyed, cars overturned, some building walls destroyed. |
| F-4 | 207 to 260 mph (333 to 418 kph) | devastating: entire buildings completely destroyed. |
| F-5 | over 261 mph (over 419 kph) | incredible: strong, steel-reinforced structures have considerable damage or are completely destroyed, objects as large as cars moved over 100 meters. |