Enhanced Fujita scale
The Enhanced Fujita Scale (EF Scale) rates the strength of tornadoes in the United States based on the damage they cause. Below is that scale.| Scale | Wind speed | Relative frequency | Potential damage | ||
| mph | km/h | ||||
| EF0 | 65–85 | 105–137 | 53.5% | Minor or no damage.
Peels surface off some roofs; some damage to gutters or siding; branches broken off trees; shallow-rooted trees pushed over. Confirmed tornadoes with no reported damage (i.e., those that remain in open fields) are always rated EF0. |
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| EF1 | 86–110 | 138–178 | 31.6% | Moderate damage.
Roofs severely stripped; mobile homes overturned or badly damaged; loss of exterior doors; windows and other glass broken. |
 |
| EF2 | 111–135 | 179–218 | 10.7% | Considerable damage.
Roofs torn off well-constructed houses; foundations of frame homes
shifted; mobile homes completely destroyed; large trees snapped or
uprooted; light-object missiles generated; cars lifted off ground. |
 |
| EF3 | 136–165 | 219–266 | 3.4% | Severe damage.
Entire stories of well-constructed houses destroyed; severe damage to
large buildings such as shopping malls; trains overturned; trees
debarked; heavy cars lifted off the ground and thrown; structures with
weak foundations are badly damaged. |
 |
| EF4 | 166–200 | 267–322 | 0.7% | Extreme damage.
Well-constructed and whole frame houses completely leveled; cars and other large objects thrown and small missiles generated. |
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| EF5 | >200 | >322 | <0.1% | Total Destruction.
Strong-framed, well-built houses leveled off and foundations swept
away; steel-reinforced concrete structures are critically damaged; tall
buildings collapse or have severe structural deformations. |
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