Etymology:
The word "derecho" comes from the Spanish noun "derecho," meaning "straight" or "right." It was first used in the meteorological context by Argentine meteorologist Gustavo Rusch in 1888.
Meaning:
A derecho is a type of severe convective windstorm characterized by:
Origin:
Derechos typically form from clusters of thunderstorms known as bow echoes or line echoes. When these storms align and form a continuous line, they can merge into a larger and more intense convective system.
The strong winds in a derecho are generated by a process known as the "rear inflow jet." As the bow echo moves forward, it creates a zone of low pressure behind it. Air from the sides is drawn into this low-pressure area, creating a surge of wind that can be extremely damaging.
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