Enhanced Fujita scaleThe 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|
|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.
Roofs severely stripped; mobile homes overturned or badly damaged; loss of exterior doors; windows and other glass broken.
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.
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.
Well-constructed and whole frame houses completely leveled; cars and other large objects thrown and small missiles generated.
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.