Went out for a walk this afternoon...and saw something kinda cool. It seems it's called sublimation. Here's the explanation, this occurs when snow or ice turns directly into water vapour (gas) without melting into liquid water first. While usually invisible, under the right conditions, you can see this "vapour" (technically, a mix of very cold air and tiny water droplets) rising from the snowbank, often looking like smoke or steam.
I've never seen it before outside, and of course, i did not bring my phone with me.