One of the delights of the Lake in the fall and winter is the frequent appearance of steam fog. But, only when there is a cold, brisk wind will that fog be sculpted to form devils—the whorl winds in the fog that are analogous to dust devils over land.
The Kootenay-Lake Website offers a discussion and more pictures of the local steam fog and steam devils.
A very cold and windy December day produced both steam fog and towering steam devils.