At the upper limits of an EF-1 tornado, complete destruction of the roof and walls can occur to a mobile home.

Each year, the United States ranks number one in tornado incidence with …

Structural damage cannot exceed total destruction, which constitutes F5 damage. Apartment buildings will experience uplift of their roof deck and suffer significant loss of roofing material.EF-3 tornadoes produce wind speeds between 136 and 165 miles per hour. The old scale lists an F5 tornado as wind speeds of 261--318 mph (420--512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 … This article lists various tornado records.The most "extreme" tornado in recorded history was the Tri-State Tornado, which spread through parts of Missouri, Illinois, and Indiana on March 18, 1925.

This is done for several structures not just one, before a final EF rating is determined.Sorry, the location you searched for was not found. Since the Fujita scale is based on the severity of damage resulting from high winds, an F6 or an F7 tornado is a theoretical construct. If an F6 tornado was to ever occur, it would have to be confirmed by the direct wind speed measurement (probably on Doppler Radar) as the damage would be total by the time the F6 winds reach the structures. Such a chart became possible only after the acceptance of the Fujita Scale as the official classification system for tornado damage. For a traditional house of less than 5,000 square feet, these winds will cause the loss of some roofing material, gutters and vinyl siding. Overturn mobile homes and badly damage them. "The six categories are listed here, in order of increasing intensity. F2: 113–157 : 181–253 A process of The original scale as derived by Fujita was a theoretical 13-level scale (F0–F12) designed to smoothly connect the At the time Fujita derived the scale, little information was available on damage caused by wind, so the original scale presented little more than educated guesses at Furthermore, the original wind speed numbers have since been found to be higher than the actual speeds required to incur the damage described at each category. The lower limit is the beginning of hurricane wind speed; peels surface off roofs; mobile homes pushed off foundations or overturned; moving vehicles pushed off the roads; attached garages may be destroyed. When Dr. Fujita developed the F scale, he created a scale that ranges from F0 to F12, with estimated F12 winds up to mach 1 (the speed of sound).

Tornadoes are one of the most powerful and frightening threats produced by nature. Tornadoes usually lasts only a few minutes, but they are very intense. Meteorologists use the Enhanced Fujita scale to estimate the winds produced by tornadoes, based on the damage left in their wake.In 1971, Dr. T. Theodore Fujita created a six-category scale that classified tornadoes by the type of damage their winds produced. Tornadoes are one of the most powerful and frightening threats produced by nature.

These wind speeds can top 200 miles per hour and cause utter devastation. And shatter windows. CrazyC83 19:25, 28 October 2005 (UTC) I found the wind-speed numbers for the rest of the categories : F7 - 380-440 mph F1 - F1 tornadoes are moderate. Its uses three-second gusts estimated at the point of damage based on a judgment of 8 levels of damage to the 28 indicators listed below. The Original Fujita Tornado Scale.

*** IMPORTANT NOTE ABOUT EF SCALE WINDS: The EF scale still is a set of wind estimates (not measurements) based on damage. Top of F12 = Mach 1. Structural damage cannot … The slabs of traditional homes will be swept clean and apartment buildings will be completely destroyed.Doug Bennett has been researching and writing nonfiction works for more than 20 years. They cause some damage to chimneys and trees.

Mobile homes will suffer uplift of their one-piece metal roofs. The wind speeds are between 73 mph and 112 mph. A tornado with wind speeds greater than 319 miles per hour (513 km/h) is theoretically possible, and the 1999 Bridge Creek-Moore Tornado may have been such an event. The highest recorded wind speed for a tornado is 301 mph … Blow away exterior doors. Fujita developed a scale based upon wind speed and damage. The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage. Roofs torn off frame houses; mobile homes demolished; boxcars overturned; large trees snapped or uprooted; high-rise windows broken and blown in; light-object missiles generated. From that, a rating (from EF0 to EF5) is assigned.

Without a thorough engineering analysis of tornado damage in any event, the actual wind speeds needed to cause that damage are unknown.

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