A derecho (/dəˈreɪtʃoʊ/, də-ray-choh, from Spanish: derecho [deˈɾetʃo], “straight”) is a widespread, long-lived, straight-line windstorm that is associated with a fast-moving band of severe thunderstorms. Generally, derechos are convection-induced and take on a bow echo form of squall line, forming…