Understanding Tornadoes: Definitions, Types, Detection

Etymology of the word tornado

The word "tornado" comes from Spanish "tronada," meaning "thunderstorm" (from the past participle of "tronar," "to thunder," which itself comes from Latin "tonāre," "to thunder"). The English spelling was influenced by Spanish "tornado" (from "tornar," "to twist, turn," from Latin "tornō," "to turn"), which led to a metathesis (switching) of the letters "r" and "o" in the English form. In related language, the term connects to the broader idea of convective wind phenomena, such as the straight-line derecho (from Spanish "derecho," meaning "straight"), though "tornado" specifically refers to the rotating column of air associated with severe storms.

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Core definition and classification criteria

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