Okay, with my free-time hobby being the study of weather and atmospheric activity, I'm left unsatisfied and felt I should say something. In particular, the sec

Okay, with my free-time hobby being the study of weather and atmospheric activity, I'm left unsatisfied and felt I should say something. In particular, the section about clouds stands to be corrected. "Clouds moving in different directions=bad weather coming, probably hail"? What you're probably seeing, when you see two huge collections of clouds moving in opposite directions is the Coriolis effect, something very common in atmospheric activity. Take this poster at face value, the abundance of the word "probably" indicates to me the creator is going off of second hand information.