Fujita Scale

Fujita Scale Statistics
Comparison of the percentage of all tornadoes between 1950 and 1954 and the percentage of tornado related casualties reveals that most tornadoes are weak.

Fujita Scale (or F Scale) - A scale of wind damage intensity in which wind speeds are inferred from an analysis of wind damage: F0 (weak): 40- 72 mph, light damage. F1 (weak): 73-112 mph, moderate damage.

Fujita Scale or Fujita Tornado Intensity Scale: The Fujita Scale (generally F0 to F5) for Tornado Intensity is used to rate the intensity of a tornado by examining the damage caused by the tornado after it has passed over a human-made structure.

Fujita Scale - a scale for classifying tornadoes according to the damage they cause; the tornado's rotational wind speed is inferred from an analysis of the wind damage
F0
Weak
40 - 72 mph ...

FUJITA SCALE: System developed by Dr. Theodore Fujita to classify tornadoes based on wind damage. Scale is from F0 for weakest to F5 for strongest tornadoes.

Fujita Scale (F-scale) The old scale used to classify the strength of a tornado. It was devised by Dr. Theodore Fujita from the University of Chicago. The F-scale gave tornadoes a numerical rating from F0 to F5.

Fujita Scale- A scale for estimating damage caused by the winds of a tornado, developed by Theodore Fujita.
Glaze- A smooth coating of ice formed when supercooled water droplets spread out on a surface before freezing.

Fujita Scale - The scale that measures the strength of tornadoes based upon wind speed.
F0: winds 40-72 mph - (Light damage) Branches broken off trees
F1: winds 73-112 mph - (Moderate damage) Trees snapped and mobile home pushed off foundations ...

F-scale (Fujita scale) A tornado intensity scale developed by T. Theodore Fujita that rates tornadoes from F0 to F5 on the basis of rotational wind speed estimated from property damage.

Wedges often appear with violent tornadoes (F4 or F5 on the Fujita Scale), but many documented wedges have been rated lower. And some violent tornadoes may not appear as wedges (e.g.

Gust speeds in such winds may exceed 50 m s−1 and occasionally strong vortices capable of doing F1 to F2 damage (see Fujita scale) may occur in association with these winds.

The intensity of tornadoes is given by the Fujita-Pearson Tornado Scale (also known simply as Fujita scale).

To take the example of tornadoes: the United States generally has at least 10 tornadoes per year ranked as F4 or F5 on the Fujita scale (see Table below), and therefore capable of producing great destruction, ...

Wind speeds are sometimes estimated on the basis of wind damage using the Fujita scale. Some tornadoes may also contain secondary vortices (suction vortices).

Several suction vortices typically are present in a multiple-vortex tornado. Much of the extreme damage associated with violent tornadoes (F4 and F5 on the Fujita scale) is attributed to suction vortices.

F ScaleAbbreviation for Fujita Scale, a system of rating the intensity of tornadoes; for detailed information, see the definition for that term.

presence of a tornado, even in the total absence of a condensation funnel.It nearly always starts as a funnel cloud and may be accompanied by a loud roaring noise. Tornadoes are classified by the amount of damage that they cause. See Fujita Scale.

Fujita Scale: A scale to desigante the intensity of a tornado developed by: Dr. Fujita. F0 (Weak).....40-72 mph.....Light Damage F1 (Weak).....73-112 mph.....Modewrate Damage F2 (Strong)...113-157 mph....Considerable Damage F3 (Strong)...158-206 mph..

Much of the extreme damage associated with violent tornadoes (F4 and F5 on the Fujita scale) is attributed to suction vortices.

See also: Tornado, Air, Thunder, Storm, Water