According to this CBC article, tropical storm Katrina will reach Canada tonight.
The last time Toronto braced for the impact of a former hurricane, her name was Isabel and the effect on Toronto was underwhelming. As I wrote that September 2003 day, "it's dark, rainy and extremely windy...up to 76 km/h they say. Other than about 10,000 people losing power, it's nothing to fear from where I'm sitting. Isabel has clearly run out of steam."
Welcome Katrina, we appreciate your wet and breezy nature. I'll take the appropriate precautions and ensure the windows on my car are fully closed.