F-scale
Number
|
Intensity
phrase
|
Wind speed
in mph
|
Type of damage
|
F-0
|
Gale
Tornado
|
40-72
mph
|
Some damage to houses, trees, bushes, and sign
boards.
|
F-1
|
Modern Tornado
|
73-112 mph
|
It can be fast as a huricane. It rips off roofs
to houses. It also can turn over automobiles, and can pull
trees straight out of the ground.
|
F-2
|
Significant Tornado
|
113-157 mph
|
It causes incredible damage to homes,
automobiles and mobile homes. It can throw small objects
several feet away from the place it they were picked up.
|
F-3
|
Severe Tornado
|
158-206 mph
|
Tears out wall paper and rugs in constructed
houses. Small objects can be blown around like missiles.
|
F-4 mph
|
Devastating tornado
|
207-260 mph
|
It can take well-constructed houses out of the
ground. It demolishes mobile homes. It can also do a lot of
damage to roads.
|
F-5 mph
|
Incredible Tornado
|
261-318 mph
|
It has been seen to throw automobiles onto trees
that are still in the ground! It has been seen to take out
streets and side walks that are dry on the ground!!!
|
F-6 mph
|
It is the biggest tornado people have ever seen.
|
319+ mph
|
These winds are as powerful as two strong
huricanes; demolishes mobile homes; tears up highways and
other things in its path; can flip over well-constructed
houses; can destroy crops, livestock, and other farm
equipment; can suck up rivers, lakes, and streams.
|
