Lone Cumulonimbus From Coggon

This was the scene looking northeast from the Go America Phillips 66 gas station at Coggon, Iowa in northern Linn County around 7:30 PM, Wednesday, June 26, 2013. The large cumulonimbus cloud, part of a very isolated storm cell, was located about 85 miles away in Allamakee County (bordering Minnesota). From the perspective of the photos, the storm was moving from upper left to lower right. In extreme foreground (left-to-right) is 6th Avenue, behind the speed limit sign is 8th Street and at far right is Highway 13. Below is a radar screen capture of this moment.