I've lived in Iowa most all my life, and was even an amateur storm chaser in my younger years. NEVER have I EVER experienced anything like what we had on Monday. Just now getting power and internet back. It looks like a war-zone in most small towns here in central Iowa. I've seen reports of 120+ mph winds, and it last for over 20 minutes. I have a 30+ meter tree I have chained together with a 10-ton chain to keep it from falling on my house. Just crazy!
www.foxnews.com
A derecho (/dəˈreɪtʃoʊ/, from Spanish: derecho [deˈɾetʃo], "straight") is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving group of severe thunderstorms known as a mesoscale convective system.[1]
Derechos can cause hurricane-force winds, tornadoes, heavy rains, and flash floods. In many cases, convection-induced winds take on a bow echo (backward "C") form of squall line, often forming beneath an area of diverging upper tropospheric winds, and in a region of both rich low-level moisture and warm-air advection. Derechos move rapidly in the direction of movement of their associated storms, similar to an outflow boundary (gust front), except that the wind remains sustained for a greater period of time (often increasing in strength after onset), and may exceed hurricane-force. A derecho-producing convective system may remain active for many hours and, occasionally, over multiple days.
en.wikipedia.org
Derecho in Midwest traveled 770 miles in 14 hours, flipped trucks and smashed a grain elevator
The wicked winds of a rare derecho roared hundreds of miles across the Midwest on Monday, flipping vehicles, killing at least one woman, and leaving over a million without power.
www.foxnews.com
A derecho (/dəˈreɪtʃoʊ/, from Spanish: derecho [deˈɾetʃo], "straight") is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving group of severe thunderstorms known as a mesoscale convective system.[1]
Derechos can cause hurricane-force winds, tornadoes, heavy rains, and flash floods. In many cases, convection-induced winds take on a bow echo (backward "C") form of squall line, often forming beneath an area of diverging upper tropospheric winds, and in a region of both rich low-level moisture and warm-air advection. Derechos move rapidly in the direction of movement of their associated storms, similar to an outflow boundary (gust front), except that the wind remains sustained for a greater period of time (often increasing in strength after onset), and may exceed hurricane-force. A derecho-producing convective system may remain active for many hours and, occasionally, over multiple days.
