Ok well I live in Dorset in the UK and when I was about 12 I remember looking out of my window at about 6:30pm when the sun was setting and I saw this strange looking cloud, the cloud was verry high up and was quite large and then I noticed that it had lots of flashing lights originating inside the cloud at first I thought that it looked some sort of Jet fighter war going on inside it or that some government was testing some sort of war weapon as it looked very creepy, then I thought it looked a bit like lighting but there was no thunder and the lightning wasn't hitting the ground, I live in a small-medium sized town so the fact that nobody else saw it made me think that I imagined it. But In 2011 I believe, there was another one of these strange clouds and it was caught on tape over Montreal and since this is a large City allot of people saw it, the only difference was that the cloud over Montreal doesn't look very puffy compared to the one I saw, and here is the video in case your wondering what I might have seen [url]http://www.youtube.com/watch?feature=endscreen&v=jercrGMdTrI&NR=1[/url]