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EF5 tornado

An EF5 tornado is the highest rating on the Enhanced Fujita (EF) Scale, indicating tornado damage consistent with estimated three-second wind gusts above 200 mph.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

An EF5 tornado is the highest rating on the Enhanced Fujita (EF) Scale, indicating tornado damage consistent with estimated three-second wind gusts above 200 mph. It is associated with *incredible damage*, including the destruction of well-built structures and severe scouring of the ground. The EF Scale became operational on February 1, 2007, and is used in the United States and Canada, including in Tornado Alley.

Definition

An EF5 tornado is the highest rating on the Enhanced Fujita Scale, used to classify tornadoes, which are a type of cyclone. The category corresponds to estimated wind speeds above 200 mph and has no specified upper bound, making it the strongest category on the operational scale.

Damage characteristics

EF5 tornadoes are associated with extreme destruction, including well-built houses swept from foundations, large structures leveled, vehicles thrown long distances, and trees debarked. Damage at this level is classified as *incredible damage*. Typical EF5 damage includes homes swept off foundations, major structural failure, and trees stripped of bark. Notable examples include the Joplin tornado.

How ratings are assigned

The EF Scale is based on post-storm damage assessment rather than direct measurement of peak tornado winds. Surveyors use damage indicators and degrees of damage to estimate intensity. EF ratings are assigned from damage surveys rather than direct wind measurements inside the tornado.

Historical context

The Enhanced Fujita Scale replaced the original Fujita Scale in operational use in the United States in 2007. EF5 is the top category of that system. The EF Scale became operational on February 1, 2007. The scale is also used in Canada, so EF5 tornado terminology appears in Canadian severe-weather reporting and damage surveys.

Key facts

  • EF5 is the strongest category on the operational Enhanced Fujita Scale.
  • It is defined by estimated three-second wind gusts greater than 200 mph, with no upper limit.
  • EF5 damage is officially described as *incredible damage*.
  • Typical EF5 damage includes homes swept off foundations, major structural failure, and trees stripped of bark.
  • The EF Scale became operational on February 1, 2007.
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Canadian context

The Enhanced Fujita Scale is used in Canada as well as the United States, so EF5 tornado terminology appears in Canadian severe-weather reporting and damage surveys.[13]

Frequently asked questions

What is an EF5 tornado?
An EF5 tornado is the strongest rating on the Enhanced Fujita Scale, indicating tornado damage consistent with estimated winds above 200 mph.
How is an EF5 tornado identified?
It is identified through damage surveys, using damage indicators and estimated wind speeds rather than direct wind measurements inside the tornado.
What kind of damage does an EF5 cause?
EF5 tornadoes can sweep houses off foundations, demolish large structures, throw vehicles, and strip bark from trees.
Does EF5 have an upper wind-speed limit?
No. EF5 is defined as above 200 mph and has no designated upper limit.
When did the EF Scale become operational?
The Enhanced Fujita Scale became operational on February 1, 2007.
Is EF5 the same as F5?
No. F5 refers to the original Fujita Scale, while EF5 is the top category of the later Enhanced Fujita Scale.

References

  1. National Weather Service — https://www.weather.gov/oun/efscale
    Supports: Operational date of the Enhanced Fujita Scale, EF5 wind-speed threshold, and damage description.
  2. BBC News — https://www.bbc.com/news/science-environment-22622769
    Supports: EF5 as the top of the scale, over 200 mph, with no upper limit.
  3. UChicago News — https://news.uchicago.edu/explainer/fujita-scale-explained
    Supports: EF5 wind-speed threshold and examples of severe damage.
  4. The Weather Channel — https://weather.com/storms/tornado/news/2024-05-03-enhanced-fujita-scale-tornado-explained
    Supports: EF5 damage descriptions and examples.