Are there any other uses for "Clear Sky"?

Clear Sky got two usages as far as i know:

1. Using it changes the weather to sunny. When you have Auriels Bow, its extremely useful when you cant see the sun.
2. There are some poisontraps around the map, mostly in dwemerruins (e.g. in markarth below the laboratory of calcelmo). The shout will remove the poison, making it possible to walk through it without taking damage.