Recalling the 2009 U.S. event that prompted a new class of storm super derecho Randi Mann
This Day in Weather History podcast on this topic, here.
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On Friday, May 8, 2009, an extreme derecho struck areas of Kansas, Missouri, and Illinois.
The term derecho means directionally straight in Spanish. It s a straight-line, widespread and long-lived wind storm. Derechos can create heavy rain, hurricane-force winds, and tornadoes. This particular storm lasted 15 hours, 28 minutes, caused 39 tornadoes and killed six people.