# How are tornadoes measured and what is the scale?

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## How are tornadoes measured what does the scale mean?

The EF Scale is the standard way to measure tornadoes based on wind damage. The original Fujita Scale (or F Scale) was developed by Dr. Theodore Fujita. … The EF scale uses three-second wind gust estimates based on a more detailed system for assessing damage, taking into account different building materials.

## What is the scale of a tornado?

The Fujita Scale

F Scale Character Estimated winds
Zero (F0) Weak 40-72 mph
One (F1) Weak 73-112 mph
Two (F2) Strong 113-157 mph
Three (F3) Strong 158-206 mph

## What is a Level 3 tornado?

EF1 (T2–T3) damage has caused significantly more fatalities than those caused by EF0 tornadoes. At this level, damage to mobile homes and other temporary structures becomes significant, and cars and other vehicles can be pushed off the road or flipped. Permanent structures can suffer major damage to their roofs.

## Is there an F6 tornado?

There is no such thing as an F6 tornado, even though Ted Fujita plotted out F6-level winds. The Fujita scale, as used for rating tornados, only goes up to F5. Even if a tornado had F6-level winds, near ground level, which is *very* unlikely, if not impossible, it would only be rated F5.

## How does the EF scale work?

By looking at the amount of damage caused to different types of structures, scientists assign the storm an Enhanced Fujita scale classification. From the amount of damage they see, they then try to reverse engineer the storm’s wind speeds. As it tracks along the ground, a tornado’s power can change.

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## What percentage of tornadoes are below F3?

Parameters

Scale Wind speed estimate Frequency
F0 40–72 44.14%
F1 73–112 34.24%
F2 113–157 16.17%
F3 158–206 4.35%