I spend time trying to explain/write down/document the weather patterns on Fletnern. I do this both for an understanding of the “regular” weather, but also because a good storm can make for an adventure by itself. The problem is that I keep thinking from a scientific point of view, and Fletnern is a magical world. (Let’s not kid ourselves; it is not like Earth being a scientific world means that the meteorologists have any clue what’s going on.)
What does magic have to do with weather? Well, there are weather spells, but that’s pretty localized stuff. I’m talking about the gods and spirits and elementals. In Rhum, the wind should blow from east to west because of the way the world spins, but it blows from north west to south east. The explanation is that the mountains nearby upset the wind patterns, but it is more than that. The spirit of the north wind brings cold weather to Rhum and the people fear him. That fear strengthens him, and they must appease him. If they do not, he blows hardest and brings the cold down from the north. The spirit of the south wind is only remembered as an afterthought and does not receive much adoration from the Rhorics. For this reason, he is willing to concede the region to his rival and allow the “normal” wind patterns to change.
A huge nearly god-like-in-power earth elemental walks north underground along the eastern coast of Hughijen. He frequently encounters barriers that prevent him from continuing on his way. When he encounters such barriers, he starts pushing. It may take him decades, but eventually, the barrier gives way and he will move ten, twenty, maybe fifty miles north, before encountering another barrier. Then he pushes again, possibly for decades. When a barrier gives way, it causes an earthquake, some of them have been massive, including the recent one that sent Detheb refugees by the boat load to Drentae. (This is in some ways a mythic explanation for “earthquake storms”.)
So, I guess I can make up whatever weather I want as long as I can explain it with the right gods, elementals and magic. I’ll keep pretending there’s a science to it, but sometimes it really is an “act of the gods”.