The closing night of the Ottawa Bluesfest was cut short after a violent storm moved in very suddenly, and an accompanying gust of wind blew over the main stage where Cheap Trick had played just minutes before. Watch the terrifying collapse in this video. (There's also footage of the dark clouds rolling in here. It's straight out of Harry Potter!) The official statement from the fest was that there were "no serious injuries on site." Had the stage collapsed forward, and not backwards, that might have been a very different scenario. The Toronto Sun reports Ottawa Mayor Jim Watson was in a booth in a scaffolding tower when the storm hit, and only the "action of a quick-thinking aide" who grabbed his arm saved him from a 50-foot fall. [Sun]