As the system passed through the Northern Des Moines metro area at 3:30 a.m., it interacted with an outflow boundary from the storms to the north and rapidly intensified as it accelerated eastward.

The storm continued to track eastward, plowing through eastern Iowa and the Southern Great Lakes region before dissipating in West Virginia in the mid-afternoon.

[1] Shortly after this complex, a major heat wave would affect the eastern half of the continent, with another significant derecho event occurring on July 17, 2011, over Ontario, Quebec and Northern New England.

[4] At Vinton, straight line wind in excess of 110 miles per hour (180 km/h) caused damage to numerous roof structures and some exterior walls, including a downtown apartment building.

During the morning hours of July 11, 2011, the line of severe thunderstorms moved very quickly across Northern Illinois and Southern Lake Michigan, producing widespread wind damage.