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  1. Tornado - Wikipedia

    A tornado is a rotating column of air that is in contact with the surface of Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a …

  2. Severe Weather 101: Tornado Basics

    What is a tornado? A tornado is a narrow, violently rotating column of air that extends from a thunderstorm to the ground. Because wind is invisible, it is hard to see a tornado unless it …

  3. Tornado | Definition, Formation, Characteristics, Videos, & Facts ...

    5 days ago · Tornado, a small-diameter column of violently rotating air developed within a convective cloud and in contact with the ground. Tornadoes occur most often in association …

  4. Tornadoes - National Geographic Society

    Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes occur.

  5. Tornado Definition - National Weather Service

    Before a tornado hits, the wind may die down and the air may become very still. A cloud of debris can mark the location of a tornado even if a funnel is not visible.

  6. Tornado facts and information | National Geographic

    Aug 28, 2019 · What is a tornado? A tornado is a violently rotating column of air that extends from a thunderstorm to the ground. It’s often portended by a dark, greenish sky. Black storm clouds …

  7. What is a tornado? - The Institute for Environmental Research …

    Jun 16, 2025 · A tornado is a violently rotating column of air extending from a cumulonimbus cloud and touching the ground. Born from powerful thunderstorms, these awe-inspiring yet …

  8. Tornadoes - Florida Climate Center

    Oct 9, 2024 · Simply put, a tornado is a violently rotating column of air that is spawned by a severe thunderstorm. It connects from the thunderstorm to the ground and often appears to …

  9. What is a Tornado? - WorldAtlas

    Aug 13, 2018 · What is a Tornado? Most tornadoes have a distinctive funnel shape. A tornado is an air column rotating at immense speeds that is in contact with the earth’s surface and a …

  10. Tornadoes 101 | National Geographic - YouTube

    Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes o...