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  2. List of United States tornadoes from September to December ...

    en.wikipedia.org/wiki/List_of_United_States...

    A brief tornado just south of I-80 was reported by storm chasers and captured on video. No damage was found. EFU WNW of Beloit: Mitchell: KS: 20:39 0.01 mi (0.016 km) 20 yd (18 m) A brief tornado just south of US 24/K-9 was captured on video. No damage was found.

  3. Enhanced Fujita scale - Wikipedia

    en.wikipedia.org/wiki/Enhanced_Fujita_scale

    This includes a description word for each level of the scale. The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States and France. [1] The EF scale is also unofficially used in other countries, including China.

  4. Tornado warning - Wikipedia

    en.wikipedia.org/wiki/Tornado_warning

    A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover. Modern weather surveillance technology such as Doppler weather radar can detect rotation in a ...

  5. What is a tornado watch vs. warning. The NWS defines a tornado as "a violently rotating column of air extending from the base of a thunderstorm down to the ground." The phenomenon is most common ...

  6. Texas weather: What's the difference between a tornado watch ...

    www.aol.com/texas-weather-whats-difference...

    Basically, a tornado watch is the less severe warning of the two. It notifies people in affected area(s) that tornados are possible and reminds them to "watch" out for them.

  7. Tornado watch or tornado warning: Which is worse? What to ...

    www.aol.com/tornado-watch-tornado-warning-worse...

    Tornado watches are usually issued at least an hour in advance of anticipated risky weather and up to eight hours before so people can make a plan to act in case a tornado is spotted and a warning ...

  8. Tornado diagram - Wikipedia

    en.wikipedia.org/wiki/Tornado_diagram

    Completed Tornado Diagram. Tornado diagrams, also called tornado plots, tornado charts or butterfly charts, are a special type of Bar chart, where the data categories are listed vertically instead of the standard horizontal presentation, and the categories are ordered so that the largest bar appears at the top of the chart, the second largest appears second from the top, and so on.

  9. What is a PDS tornado watch? Understanding the label that ...

    www.aol.com/pds-watch-understanding-label...

    The Midwest, including portions of Iowa, was under a “particularly dangerous situation tornado watch” on May 21. The PDS watch is a special label applied to watches by the National Weather ...