I often have to park the car and wait for my kids. This offers me prime sketching time. If I am at a loss for a subject, I'll usually just pick something random and go from there. This is one such sketch. I kind of wanted to capture the main landscape elements and the atmosphere in the sky.
Not sure if it totally translated, but that is the fun of sketching. If I feel like sketching something else, the commitment level is low, so all I have to do is turn the page for something new.