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Starside’s disaster security teams are strategically placed across the nation in order to respond to Tornado Disasters throughout the heart of the United States.  These deployments require mass deployments of man power to properly secure and assist the Federal Government and major corporations in their needs of security of their assets, personnel and assistance with the logistics of a natural disaster.  Starside’s Disaster Specialists will work with the Government and corporations with their Emergency Operation Plans to ensure stability.  Every disaster is different in severity and every municipality and corporation has different methods and concerns.  Starside’s disaster security professionals approach and assimilate to any situation with efficiency, attention to detail, professionalism, an un-paralleled effort and cooperation with our clients.
Beaufort Scale
Fujita Scale
The Fujita scale (F-Scale), or Fujita-Pearson scale, is a scale for rating tornado intensity, based on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determined by meteorologists (and engineers) after a ground and/or aerial damage survey; and depending on the circumstances, ground-swirl patterns (cycloidal marks), radar tracking, eyewitness testimonies, media reports and damage imagery, as well as photogrammetry/videogrammetry if motion picture recording is available.
The six categories are listed here, in order of increasing intensity. Note:

  1. When the relative frequency of tornadoes is mentioned, it is the relative frequency in the United States. Frequencies of strong tornadoes (F2 or greater) are significantly less elsewhere in the world. Parts of southern Canada, Bangladesh and adjacent areas of eastern India, and possibly a few other areas do have frequent severe tornadoes, however data is scarce and statistics in these countries have not been studied thoroughly.
  2. The rating of any given tornado is of the most severe damage to any well-built frame home or comparable level of damage from engineering analysis of other damage.
  3. The F6 level, although present in Dr. Ted Fujita's original wind scale, was not intended for use, is not an official damage level and is not used to rate tornadoes. There is, by definition, no such thing as an 'F6' tornado.[2]


Category F0 Estimated wind speed* 40–72 mph 64–116 km/h Relative frequency 38.9%
Potential damage

F0 damage example
Light damage. Some damage to chimneys; branches broken off trees; shallow-rooted trees pushed over; sign boards damaged.
Category F1 Estimated wind speed* 73–112 mph 117–180 km/h Relative frequency 35.6%
Potential damage

F1 damage example
Moderate damage. The lower limit is the beginning of hurricane wind speed; peels surface off roofs; mobile homes pushed off foundations or overturned; moving autos pushed off the roads; attached garages may be destroyed.
Category F2 Estimated wind speed* 113–157 mph 181–253 km/h Relative frequency 19.4%
Potential damage

F2 damage example
Considerable damage. Roofs torn off frame houses; mobile homes demolished; boxcars overturned; large trees snapped or uprooted; light-object missiles generated.
Category F3 Estimated wind speed* 158–206 mph 254–332 km/h Relative frequency 4.9%
Potential damage

F3 damage example
Severe damage. Roofs and some walls torn off well-constructed houses; trains overturned; most trees in forest uprooted; heavy cars lifted off the ground and thrown.
Category F4 Estimated wind speed* 207–260 mph 333–418 km/h Relative frequency 1.1%
Potential damage

F4 damage example
Devastating damage. Well-constructed houses leveled; structures with weak foundations blown away some distance; cars thrown and large missiles generated.
Category F5 Estimated wind speed* 261–318 mph 419–512 km/h Relative frequency Less than 0.1%
Potential damage

F5 damage example
Incredible damage. Strong frame houses lifted off foundations and carried considerable distances to disintegrate; automobile sized missiles fly through the air in excess of 100 m (109 yd); trees debarked; steel reinforced concrete structures badly damaged; incredible phenomena will occur.