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EF1 and EF2 are ratings on the Enhanced Fujita scale, which uses the damage a tornado does to assign it to one of six strength categories which run from EF0 at the weakest to EF5 at the strongest.

An EF1 tornado has estimated winds of 86-110 mph. It is considered a relatively weak tornado with typical damage including broken windows, badly damaged roofs, and overturned trailers.

An EF2 tornado with winds of 111-135 mph is considered the beginning of a strong tornado. Typical Ef2 damage includes roofs torn from well-built houses, and trailer homes completely destroyed.

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Q: What are EF-1 and EF-2?
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