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A tornado is a violently rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind or cyclone, [1] although the word cyclone is used in meteorology to name a weather system with a low-pressure area in the ...
Tornadoes are more common in the United States than in any other country or state. [1] [2] The United States receives more than 1,200 tornadoes annually—four times the amount seen in Europe. [3] [4] Violent tornadoes—those rated EF4 or EF5 on the Enhanced Fujita Scale —occur more often in the United States than in any other country.
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. It is considered an F5 on the Fujita Scale, holds records for longest path length at 219 miles (352 km) and longest duration at about 3⁄ hours, and held the fastest forward speed for a ...
Tornadoes are some of Mother Nature's most destructive forces. Capable of flattening entire neighborhoods and taking many lives, these massive, swirling columns of air pack winds that can reach ...
The 2013 El Reno tornado was an extremely large, powerful, and erratic tornado [a] that occurred over rural areas of Central Oklahoma during the early evening of Friday, May 31, 2013. This rain-wrapped, multiple-vortex tornado was the widest tornado ever recorded and was part of a larger weather system that produced dozens of tornadoes over the ...
A multiple-vortex tornado outside Dallas, Texas, on April 2, 1957. A multiple-vortex tornado is a tornado that contains several vortices (called subvortices or suction vortices) revolving around, inside of, and as part of the main vortex. The only times multiple vortices may be visible are when the tornado is first forming or when condensation ...
The 2011 Joplin tornado was a large and devastating multiple-vortex tornado that struck Joplin, Missouri, United States, on the evening of Sunday, May 22, 2011.Part of a larger late-May tornado outbreak, the EF5 tornado began just west of Joplin and intensified very quickly, reaching a maximum width of nearly one mile (1.6 km) during its path through the southern part of the city.
There were 40 tornadoes with deaths at schools (234 deaths) before 1953 and 6 events (52 deaths) after that year (not including the probable downburst in New York). Two high fatality events after 1953 occurred in Mississippi (23 in 1955) and Illinois (13 in 1967); accounting for 82% of 1952–2006 deaths, both from violent class tornadoes.
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