Wow, Thorin, you and elfhelm just had your own little battle of words. I don't know if it would look strange to have random storm systems moving across the map because they are powers. Saromaun helped make the storm on the mountain worse in the fellowship right.
Not in the book, no. Just the mountain itself giving off some bad weather.
But again, I wasn't talking about their suitability - just correcting something which I saw was wrong