This looks like it did around here (Oakville) too, this afternoon but did you just get pasted with wild wind, torrential rain and big hunks of hail? One minute I was watching two bunnies eating greens on a sunny lawn and five minutes later looked up to see grape sized hail bouncing off the patio.
@gardencat Hi Joanne. Yes, we got that wind/rain/hailstorm, too! Amazing, wasn't it? Now the sun has come back out and the robins are singing away pre-dusk. :-)