Risk of tornados yesterday, part of the same deadly weather system that hit the USA; in the end we had no more than a standard thunderstorm or two. There's storm watch again, for today, the wind (gusting >80kph at times) blowing heavy showers in and out of Ottawa. I hear that we have had a record month of rainfall in Ottawa, which means a risk of flooding too. The rivers look restless and dramatic.
I attach an aerial photo of Ottawa-Gatineau, taken in 2007 at about this time of year, which shows the swirls of foam engendered by the Rideau Falls in full spate.