Might just be a local thing, but not really where I live. We see them off in the distance regularly, but like you said, mostly over the lakes and typically late in the evening or at night. Maybe it's just a timing thing, or maybe it's just the unobstructed horizon in Alberta, but I used to go out to Nose Hill in Calgary and watch huge storms what felt like every week or two. Here, I've enjoyed a few but subjectively feels like not nearly as many, nor as good a show.