'Derecho' Rages Through Midwest

A derecho, a line of storms with winds gusting as high as 112mph, traveled more than 200 miles across the Midwest on Monday, leaving millions without power and causing serious damage to vehicles, homes, and other buildings. NBC News rounds up videos of the intense weather as well as a roundup of the strongest winds, and explains that in terms of derecho intensity, this one was in the upper levels. It began as a small cluster of thunderstorms near the Nebraska-Iowa border but grew stronger as it moved east; wind gusts were 60mph-90mph by the time it reached Chicago in the afternoon. Downed trees and power lines even caused fires in the city, CNN reports. The storm continued to head east and was expected to ease overnight. (More severe weather stories.)