Tornado- Violently rotating column of air extending between the connection it has with a cloud and the connection of the earth's surface.

Tornadoes form where warm moist air is trapped underneath a layer of cold, dry air. The unstable effect is upset when the warm bottom layer gets pushed upward-- caused either by heating neat the ground, or by an influx of cold air. Approximately 1,000 tornadoes hit the United States each year. Wind speeds are estimated on the amount of damage left over from the tornado. Tornadoes are categorized on a scale of 0 (weakest) to 5 (strongest) according to the Fujita Scale. Texas, Oklahoma, Kansas, and Florida get most tornadoes in the United States. Texas gets the most out of all with an average of 125 tornadoes a year. Next to most is Oklahoma with an average of 57 tornadoes a year. Finally last is both Kansas and Florida tied with an average of 55 tornadoes a year. Most tornadoes occur in the month of May and continues slightly into June. May of 2003 made a record break of 543 tornadoes total.
The deadliest outbreak occured on April 3, 1974, when a two- day "Super Outbreak" of 147 tornadoes killed 308 people in 13 states. The "Tri- state" tornado that killed 695 people along a 219 mile long track across parts of Missouri, Illinois and Indiana on March 18, 1925. Tornadoes usually form in areas where winds at all levels of the atmosphere are not only strong, but also turn with height in a clockwise, or veering direction. Tornadoes can appear in two different ways, one way is it can appear as a traditional funnel shape, or the second way is it can appear in a slender rope- like form.

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