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DERECHO

8th July, 2022

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In News

  • Many States in the United States were hit by a storm system called a derecho.
  • The speed of the wind during the storm was around 140 km per hour.
  • The storm has turned the skies green.

 

Derecho

  • According to the US’s National Weather Service ‘Derecho’ is “a widespread, long-lived, straight-line windstorm” that is associated with a “band of rapidly moving showers or thunderstorms”.
  • Derecho is a Straight-line storm in which thunderstorm winds have no rotation, unlike a tornado.
  • These storms could travel hundreds of miles and cover a large area.
  • They fall into 3 categories; Progressive, Serial and Hybrid.
  • In Progressive derecho, a short line of thunderstorms travels for hundreds of miles along a relatively narrow path. It is a summer phenomenon.
  • In Serial derecho, an extensive wide and long line of thunderstorms – travel across a large area. It usually occurs during spring.
  • Hybrid derecho has the features of both progressive and serial Derechos.
  • Derechos mostly occur across central and eastern parts of the United States.
  • Derechos have also been documented in other parts of the world;
    • In 2010, Russia witnessed its first documented derecho.
    • They have been seen in Germany, Finland, Bulgaria and Poland.

 

https://indianexpress.com/article/explained/everyday-explainers/what-is-derecho-storm-that-turned-the-sky-green-in-the-us-8015503/

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