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The ORIGINAL Fujita Scale Inlcuded for historical reference, this is the Fujita scale used until 2007.Still image:
Size: 3341 x 2506
Acquisition: Graphic, Scanned illustration
Frame rate: still
Clearance: No releases required
Location: Graphic
License: Royalty Free
Usage: Creative and Editorial
Point of view: Ground in scene
Geography: Rural
Still images available: Y
Keywords:   Storm chasers, Storm damage, Wind energy, Atmospheric science facilities, Wind, Weather Explanations, Thunderstorm, Tornado
Asset ID: 5294
Title: The ORIGINAL Fujita Scale
Concept: Inlcuded for historical reference, this is the Fujita scale used until 2007.
Detail: There is a new ENHANCED Fujita Scale (the EF scale). Please see the Storm Prediction Center for details: http://www.spc.noaa.gov/efscale/ and http://www.wdtb.noaa.gov/courses/EF-scale/index.html === In an attempt to estimate the power of tornadoes, Professor T. Theodore Fujita of the University of Chicago along with Allan Pearson, then Director of the National Severe Storms Forecast Center, developed anintensity scale for tornadoes in 1971. It is rather like the tornadic equivalent of the Richter scale for earthquakes. There are six categories ranging from F0-F5. The wind speeds are necessarily estimates, since wind measuring equipment in the path of a tornado, usually does not survive. Fully 53% of all reported tornadoes are in the F-0 or F-l class. F-l is the most commonly reported intensity with wind speeds somewhat over 100 miles per hour. Fully 63 percent of all tornadoes are reported as "weak," that is F-2 and F-3 with wind speeds between 113 and 206 miles per hour. The maxi-tornadoes are F-4 and F-5, with wind speeds perhaps approaching 300 miles per hour or slightly greater. They constitute only 2% of the total tornadoes reported. However, the maxi-tornadoes due to their tremendous size, width, longevity and intensity, account for 68% of the fatalities. Fortunately, current tornado detection techniques, including conventional radar, are most likely to detect the maxi-tornado. It is the small short-lived F-0 and F-l tornadoes which are very hard to detect, and, therefore, most likely to strike without an appropriate warning. Note: In the new EF scale, the peak winds for 4 and 5 events appear to be lower than in the original Fujita scale.

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