Driving home in late July, I noticed this very large flume of white smoke trailing up to the sky off in the distance. Now I knew it couldn't be smoke, it was too large of an area. Perhaps I caught a photo of the sky falling and those are clouds trickling down to earth. From where I took this photo it was mostly sunny, with the sun behind me, but across the Mississippi River and into Wisconsin, it was rainy weather. I figure the suns rays were at the right angle to brighten up the raindrops to give it the appearance of smoke or the clouds falling.