Taken in Jasper, Alberta in August of last year. This was the first in a series of shots of a developing storm along Maligne Lake Road. The colours in the sky were absolutely incredible, and I was lucky enough to have a decent reflection mirroring those colours as well.
This storm was one of the most violent storms I have experienced. And oh, so much fun, while sleeping in a tiny little tent. It actually caused a landslide (see link), approximately where I was standing for this shot a few hours later!