Here’s how a ‘derecho’ is defined by weather experts – NBC Chicago

Category: Weather

Derechos are powerful wind storms that can cause extensive damage in the Midwest, characterized by long-lived straight-line winds with wind gusts of at least 58 miles per hour along a swath extending more than 240 miles. They are most common between May and July, developing with a 'bow echo' and sustained by strong updrafts. Illinois averages one derecho each year.

Keywords: Derecho, Midwest, Wind Storms, National Weather Service, Illinois

Source: NBC Chicago

Update At: 7/16/2024

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