DERECHO
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- 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.
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