Downburst
Videos
In meteorology, a downburst is a strong downward and outward gushing wind system that emanates from a point source above and blows radially, that is, in straight lines in all directions from the area
A downburst seen in Phoenix, Arizona.
Illustration of a microburst at an airport. The air moves in a downward motion until it hits the surface. It then spreads outward in all directions. The wind regime in a microburst is opposite to that of a tornado.
Downburst damage in a straight line.
Dry microburst schematic
Derecho
Videos
A derecho is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving complex of severe thunderstorms referred to as a mesoscale convective system.
Downburst
…in extent are sometimes called macrobursts. Downbursts can occur over large areas. In the extreme case, a series of continuing downbursts results in a derecho, which covers huge areas of more than 320 km (200 mi) wide and over 1,600 km (1,000 mi) long, persisting for 12 hours or more, and which is associated…
Composite radar image of the June 2012 North American derecho (a progressive derecho) as it moved from Indiana to Virginia
A typical multi-bow serial derecho
A typical progressive derecho
Damage to the Väike-Maarja Church in Estonia after the derecho hit on 8 August 2010