The (main) Kootenay Lake website has a page devoted to local wave clouds.
In the summertime, cumulus clouds are the norm; in the wintertime, wave clouds (lenticular clouds) are more common. Alas, for those of us who are valley dwellers, the wave clouds of winter are often obscured by stratus. So, we take pleasure in the occasional summertime appearance.
(Aside: This is my first posting for a week. As yet, my broken computer is neither fixed nor replaced. I am limping along on a borrowed machine. I will now try to catch up on a week’s backlog of images.)
Wave clouds over the south Selkirks a week ago (Aug. 17, 2011)