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Topic: Fujita scale


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In the News (Fri 27 Nov 09)

  
  EF-Scale_dev
The Fujita Scale is a well known scale that uses damage caused by a tornado and relates the damage to the fastest 1/4-mile wind at the height of a damaged structure.
Fujita's scale was designed to connect smoothly the Beaufort Scale (B) with the speed of sound atmospheric scale, or Mach speed (M).
Fujita explains explicitly that "F-scale winds are estimated from structural and/or tree damage, the estimated wind speed applies to the height of the apparent damage above the ground." Figure 1 shows graphically the relationship between the three scales.
www.spc.noaa.gov /efscale   (979 words)

  
 Fujita scale - Wikipedia, the free encyclopedia
Fujita scale ratings are issued after a tornado has passed through an area, not while it is on the ground.
The scale was introduced in 1971 by Tetsuya "Ted" Fujita of the University of Chicago who developed the scale together with Allen Pearson (path length and width additions in 1973), head of the National Severe Storms Forecast Center (predecessor to the Storm Prediction Center) in Kansas City, Missouri.
The new scale was publicly unveiled at a conference by the American Meteorological Society in Atlanta on February 2, 2006.
en.wikipedia.org /wiki/Fujita_scale   (1220 words)

  
 Fujita Tornado Damage Scale   (Site not responding. Last check: 2007-10-21)
The Fujita Scale is what looks at the amount of destruction to the environment and to man made structures that are destroyed by the tornado.
The Pearson Scale is a more scientific way of looking at a tornado while the Fujita Scale is more subjective since it relies on the aftermath and destruction of the tornado to estimate the wind speeds of the tornado.
This is a graph, which displays the Fujita scale shows the F-Scale along the left side of the graph as well as the level of destruction at right and the winds speeds that are capable of causing this destruction at the bottom.
www.uwec.edu /jolhm/EH/Barnier/fujita.htm   (236 words)

  
 USATODAY.com   (Site not responding. Last check: 2007-10-21)
Fujita listed "F-6" and even higher ratings on on his original scale, but F-6 or higher rated tornadoes aren't thought to exist.
The Fujita scale is different from the Saffir-Simpson scale of hurricane strength in one very important way.
Fujita scale numbers are assigned to tornadoes only after the fact; after the National Weather Service inspects the damage.
www.usatoday.com /weather/wfujidef.htm   (412 words)

  
 Fujita_Scale Forum
The Fujita Scale (F-Scale) is a measure of tornado intensity that was invented by Dr. Ted Fujita (Fujita 1971).
The Fujita Scale is a damage scale since numerical values are assigned based on descriptions of typical types of damage and since it has been closely aligned with photographs that depict the assigned levels of damage.
Fujita was well aware of the criticisms leveled at the non-overlapping wind speed scales and their correlation with specific damage observations.
www.april31974.com /fujita_scale_forum.htm   (10923 words)

  
 NCDC: Satellite Events Art Gallery: Educational Topics
The Fujita scale bridges the gap between the Beaufort Wind Speed Scale and Mach numbers (ratio of the speed of an object to the speed of sound) by connecting Beaufort Force 12 with Mach 1 in twelve steps.
F1 on the Fujita scale is equal to B12 (73 mph) on the Beaufort scale, which is the minimum windspeed required to upgrade a tropical storm to a hurricane.
F12 on the Fujita scale is equal to M1 (738 mph) on the Mach numbers.
www.ncdc.noaa.gov /oa/satellite/satelliteseye/educational/fujita.html   (651 words)

  
 Fujita Scale   (Site not responding. Last check: 2007-10-21)
This scale relates the wind speed of a tornado to the amount of damage done.
This scale is not a perfect system for linking damage to wind speed, but it has advantages over what had been used previously.
The FPP scale rates the intensity of the tornado, and measured both the path length and the path width.
www.lindleyonline.com /tornado/fujita.htm   (582 words)

  
 The Fujita Scale of Tornado Intensity
The Fujita Scale is used to rate the intensity of a tornado by examining the damage caused by the tornado after it has passed over a man-made structure.
The Fujita Scale is based on damage, not the appearance of the funnel.
Storm spotters, storm chasers and other weather observers often try to estimate the intensity of a tornado when they are in the field, basing their judgement on the rotational speed and amount of debris being generated as well as the width.
www.tornadoproject.com /fscale/fscale.htm   (1525 words)

  
 Welcome to the Tornado and Storm Research Organisation   (Site not responding. Last check: 2007-10-21)
After testing the tornado scale for three years the TORRO Tornado Intensity Scale was announced at a meeting of the Royal Meteorological Society in 1975 and published next year in the UK (Meaden 1975-76) and in the USA (Abbey 1976).
Having noted the existence of the Beaufort scale as being useful for speeds below hurricane speed, Dr. Fujita reflected that, in case the highest wind speeds in tornadoes might be found to approach Mach 1 (738 mph or 330 metres per second), he should allow for that when proposing his tornado damage scale.
Moreover, because Fujita’s scale was given F numbers from F0 to F12, only the part up to F5 is of any use for all known tornadoes, rendering it very cramped in practical use.
www.torro.org.uk /severeweather/Tscaleorigin.htm   (1201 words)

  
 Fujita Scale - Ted Fujita Enhanced Fujita Scale
On the Fujita Scale you will notice each F scale number has the type of damage expected with it and also the estimated wind speeds associated with such damage.
Through extensive research the Fujita Scale was developed based on damage, not wind speeds.
The Following is the Fujita Scale used to measure the intensity of tornadoes.
www.tornadochaser.net /fujita.html   (491 words)

  
 Fujita   (Site not responding. Last check: 2007-10-21)
Fujita began studying meteorology in 1947 in Japan after he heard approaching thunder.
In the 1970's, Dr. Fujita invented the Fujita Scale to measure the link between tornado damage and wind speed.
The highlight of Dr. Fujita's outbreak analysis occurred with the tornado outbreak of 1974.
snrs.unl.edu /amet451/kozisek/Fujita.html   (287 words)

  
 Fujita-Pearson Scale of Tornado Intensity
The scale was original created in 1971 by Dr. Fujita as a way of determining the strength of tornadoes from the damage that they caused.
Fujita and Dr. Pearson two years later published a paper that added in factors related to the width and length of the tornado path, and called the scale the Fujita-Pearson Scale.
Yet when a spotter or anyone else from the field makes a judgment about the size of a tornado without damage data, but on the width and length of the tornado path, they are making that judgment based on the size of the tornado on the ground, which is the Pearson method.
www.disastercenter.com /tornado/fujipear.htm   (306 words)

  
 New Tornado Scale - Meteorologists, Wind Engineers Standardize Fujita Scale
The Fujita Scale rates tornadoes based on the damage inflicted upon buildings, so accurate rating requires knowing how resistant buildings were in the first place.
It will replace the original Fujita scale, which was originally developed for wooden structures.
THE FUJITA SCALE: The F Scale was developed in 1971 by Theodore Fujita to rate tornadoes and estimate their wind speed based on the damage they cause.
www.aip.org /dbis/stories/2006/15166.html   (409 words)

  
 Fujita scale - StormWiki   (Site not responding. Last check: 2007-10-21)
Fujita Scale (or F Scale) - A scale of wind damage intensity in which wind speeds are inferred from an analysis of wind damage:
All tornadoes, and most other severe local windstorms, are assigned a single number from this scale according to the most intense damage caused by the storm.
The Enhanced Fujita Scale still is a set of wind estimates (not measurements) based on damage.
stormwiki.unk.edu /index.php/Fujita_Scale   (266 words)

  
 Fujita Scale for Tornado Intensity   (Site not responding. Last check: 2007-10-21)
The Fujita Scale is named for Dr. T.
Since, until recently, it was very difficult to actually measure wind speeds in a tornado, he devised a classification scheme based on the damage or other effects caused by the winds.
Finally, everyone agrees that a tornado cannot really be quantified by a single number, but a scale like this at least gives you a starting point to work with.
www.reelefx.com /Tornado/fujita.htm   (504 words)

  
 Fujita Tornado Scale
Fujita scale in relation to the Beaufort and Mach scales
Fujita created a scale which groups tornadoes into categories based on how much damage the caused.
Because the scale is based on the damage caused by it, they can't predict how strong a tornado would be before it happens like they can predict a hurricane's strength using the
www.windows.ucar.edu /tour/link=/earth/Atmosphere/tornado/fujita.html   (230 words)

  
 Fujita Scale
The Fujita Scale or Fujita Pearson Scale uses the amount and type of damage to categorize different tornadoes.
The Fujita Scale was developed by Tetsuya Theodore Fujita.
in 1974 he was able to map the entire path of the 148 thunderstorms in the Super outbreak of 1974 using the Fujita Scale intensity contours.
www.tntworm.com /fujita_scale.html   (452 words)

  
 Tornado Fujita Scale Altered
Under the old scale, the F numbers registered too high as compared to all the empiirical data collected as regards actual damage.
The EF Scale will continue to rate tornadoes on a scale from zero to five, but ranges in wind speed will be more accurate with the improved rating scale.
The F Scale was developed in 1971 by T. Theodore Fujita to rate tornadoes and estimate associated wind speed based on the damage they cause.
technocrat.net /d/2006/2/4/241?via=rss   (575 words)

  
 Fujita scale - HighBeam Encyclopedia   (Site not responding. Last check: 2007-10-21)
FUJITA SCALE [Fujita scale] or F-Scale, standard scale for rating the severity of tornadoes as a measure of the damage they cause, devised in 1951 by the Japanese-American meteorologist Tetsuya (Ted) Fujita (1920-98).
Find newspaper and magazine articles plus images and maps related to "Fujita scale" at HighBeam.
Researchers Can Speak About Changes to Fujita Scale.
www.encyclopedia.com /doc/1E1-fujitasc.html   (361 words)

  
 Fujita Scale: Rating the Severity of Tornadoes - Environment Canada
The Fujita scale is used to rate the severity of tornadoes as a measure of the damage they cause.
The scale was devised in 1971 by the Japanese-American meteorologist Tetsuya (Ted) Fujita.
However, recent research suggests that as many as two may have occurred in Saskatchewan, regardless, F5 tornadoes are possible in Canada every summer.
www.mb.ec.gc.ca /air/summersevere/ae00s12.en.html   (283 words)

  
 ! historical weather records, forensic Weather, Weather history, past weather forecasting
In the U.S., tornadoes are classified according to a system known as the Fujita or Fujita-Pearson scale, named after Professor Theodore Fujita, retired professor at the University of Chicago, and Dr. Alan Pearson, former director of the National Severe Storm Forecast Center (NSSFC), who devised the system in 1971.
This scale may not be a perfect system for linking damage to wind speed, but it had distinct advantages over what had gone on before its inception.
Although storm spotters, storm chasers and other weather observers often try to judge the intensity of a tornado when they are in the field, the official estimate or classification is made after the tornado has passed.
www.compuweather.com /chart_fujita.htm   (402 words)

  
 Fujita Scale
The Fujita Scale uses numbers from 0 through 5 and the ratings are based on the amount and type of wind damage.
The scale had been calculated through F-12, which is Mach 1 - the speed of sound (750 mph) - but tornado wind speeds are not expected to reach these speeds; see the F-6 description below.
If this level is ever achieved, evidence for it might only be found in some manner of ground swirl pattern, for it may never be identifiable through engineering studies.
www.bocc.citrus.fl.us /disaster/tornado/fujita_scale.htm   (294 words)

  
 Fujita Scale with Pictures   (Site not responding. Last check: 2007-10-21)
The Fujita Scale was first proposed by Dr. Fujita in 1971.
It is used by meterologists to estimate the speed of winds after a tornado by studying the damage caused by the tornado to structures.
Recently the scale has been used to confirm the idea that some hurricane damage is caused by torndoes that form within hurricanes.
www.disastercenter.com /tornado/fujita.htm   (272 words)

  
 Fujita or F Scale for wind velocity
In 1971, T. Fujita proposed a wind scale to cover the range from force 12 at the top of the Beaufort scale to Mach 1, the speed of sound in air, in 12 equal steps.
The equivalent on the Fujita scale or F-scale of any wind speed M (in meters per second) can be found from the equation
In practice, however, only whole numbers are used, and the wind velocity is estimated from effects observable in the aftermath, in which respect the Fujita scale resembles the Mercalli Scale for earthquake intensity.
www.sizes.com /natural/fujita.htm   (275 words)

  
 Fujita scale — Infoplease.com   (Site not responding. Last check: 2007-10-21)
Fujita Tornado Intensity Scale - Fujita Tornado Intensity Scale The Fujita scale classifies tornadoes according to the damage they...
Beaufort scale - Beaufort scale, a scale of wind velocity devised (c.1805) by Admiral Sir Francis Beaufort of the...
Nanotechnology-enabled sensors: possibilities, realities, and applications: operating on the scale of atoms and molecules, emerging......
www.infoplease.com /ce6/weather/A0819838.html   (432 words)

  
 AllRefer.com - Fujita scale (Weather And Climate: Terms And Concepts) - Encyclopedia
AllRefer.com - Fujita scale (Weather And Climate: Terms And Concepts) - Encyclopedia
Fujita scale, Weather And Climate: Terms And Concepts
Fujita scale[fOOjE´tu, fOO´jEtu] Pronunciation Key or F-Scale, standard scale for rating the severity of tornadoes as a measure of the damage they cause, devised in 1951 by the Japanese-American meteorologist Tetsuya (Ted) Fujita (1920–98).
reference.allrefer.com /encyclopedia/F/Fujitasc.html   (386 words)

  
 Fujita Scale   (Site not responding. Last check: 2007-10-21)
The Fujita Scale was developed in 1971 to figure out how strong a tornado was by looking at the damage it did.
In 2006 the NWS therefore established an Enhanced Fujita Scale based on years of additional research.
The EF (Enhanced Fujita) scale directly correlates to the original F scale.
www.tapestryweb.org /tornado/fujita.html   (475 words)

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