I think the thunderstorm is a good backdrop, but not good as the main graphic.
It's complexity makes you search it for meaning, but there really isn't any. Your first concept, with the text-over works, because there's a lot of complexity, but there are words too.
I think if you either put some characters or other objects on the storm, or some words, it would help a lot.
I think I'm also bothered by the clouds on the buttons. Since it's stormy, there shouldn't be fluffy clouds.
Bob