What is tornado?

  • (noun): A purified and potent form of cocaine that is smoked rather than snorted.
    Synonyms: crack
    See also — Additional definitions below


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. They are often referred to as twisters or cyclones, although the word cyclone is used in meteorology, in a wider sense, to name any closed low pressure circulation. Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust. Most tornadoes have wind speeds less than 110 miles per hour (177 km/h), are about 250 feet (76 m) across, and travel a few miles (several kilometers) before dissipating. The most extreme tornadoes can attain wind speeds of more than 300 miles per hour (483 km/h), stretch more than two miles (3.2 km) across, and stay on the ground for dozens of miles (more than 100 km).

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Some articles on tornado:

Tornado - Ongoing Research
... mesocyclone and the stretching of low-level vorticity which tightens into a tornado, namely, what are the processes and what is the relationship of the environment and the convective storm ... Reliably predicting tornado intensity and longevity remains a problem, as do details affecting characteristics of a tornado during its life cycle and tornadolysis ... which most tornadoes form, and occasional tornadoes still strike without a tornado warning being issued ...
Late-May 1998 Tornado Outbreak And Derecho - Spencer, South Dakota Tornado
... The Spencer, South Dakota tornado was the most destructive and second deadliest tornado in the history of the state ... It was also the fifth deadliest tornado of the year ... It began as a large, dust-cloaked tornado Northwest of Farmer, SD in Hanson County, concurrent with the demise of the "Fulton" tornado ...
1996 Southern Ontario Tornadoes
1 2 Southern Ontario's worst tornado outbreak of the decade came on Saturday April 20, 1996 ... The first tornado that touched down tore a 40 kilometre long path southeast of Owen Sound ... A second tornado touched down farther south and took a 60 kilometre track from Arthur to just southwest of Barrie ...
Late-May 1998 Tornado Outbreak And Derecho
... The Late-May 1998 Tornado Outbreak and Derecho was a historic tornado outbreak and derecho that began on the afternoon of May 30 extending throughout May 31, 1998, across a large ... The initial tornado outbreak, including the devastating Spencer tornado, hit southeast South Dakota on the evening of the May 30 ... The Spencer tornado was the most destructive and second deadliest tornado in South Dakota history ...
Late-May 1998 Tornado Outbreak And Derecho - Confirmed Tornadoes - May 30 South Dakota Event
... South Dakota F0 W of Lake Preston Kingsbury 0002 unknown First tornado touchdown ... F1 NW of Fulton Hanson 2 ... miles (3.2 km) This was a fairly large and dusty tornado that affected mostly open ground in rural areas ... It was the first tornado of the tornado family generated by the supercell that produced the Spencer tornado ...

More definitions of "tornado":

  • (noun): A localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground.
    Synonyms: twister

Famous quotes containing the word tornado:

    The sumptuous age of stars and images is reduced to a few artificial tornado effects, pathetic fake buildings, and childish tricks which the crowd pretends to be taken in by to avoid feeling too disappointed. Ghost towns, ghost people. The whole place has the same air of obsolescence about it as Sunset or Hollywood Boulevard.
    Jean Baudrillard (b. 1929)