A storm system that moves a long distance rapidly and brings winds which can devastate an area several miles wide.‘I would like to know what scientific writings about bow echoes and derechos have been published.’
- ‘When the bow echo bulge reaches 80-320 km wide, the derecho has been born.’
- ‘View a radar animation of the derecho as it passed through the area.’
Late 19th century Spanish, literally ‘direct, straight’.
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