The second is straight out just not an example. It's neither an inversion nor an aversion.
The first one isn't an inversion, but it might be an aversion. However, considering it's sci-fi, I don't think it's even that, as unusual weather patterns aren't exactly unusual in the genre, whether they're unusual in fiction or real life.
Check out my fanfiction!Shoot...I guess I don't know as much as I'd thought about tropes; I figured that the question of whether something was an aversion of a trope or not didn't depend on which genre the trope appeared in.
Yeah, aversions, at least as we define them, are only listed if it's a trope that's expected in the genre. The typical example is Space Is Noisy, which you'd expect in softer sci-fi like Space Western and Space Opera, but in harder realistic sci-fi like Speculative Science you wouldn't expect it, so we don't list aversions for those works.
Actually, the level of realism is often a good indicator for whether a trope is expected or not. Tropes are often conventions that break from reality for the sake of telling a story, and those are not expected in works that aim to be realistic.
Inversions are a lot trickier, since any given trope can be "inverted" in multiple ways, depending on what part of it you invert. But quite often, like the case here, an inversion results in something that isn't of any note, because it removes what makes the trope a trope.
Check out my fanfiction!Also note that when a Necessary Weasel or Acceptable Break From Reality is averted in a work, you should see if that more properly falls under Reality Ensues.
"It's Occam's Shuriken! If the answer is elusive, never rule out ninjas!"
There are about two scenarios that happen one after another in this one book, A Swiftly Tilting Planet, that have to do with thunder. I'm trying to figure out which one of them counts as an inversion of Thunder Equals Downpour. They both might; I'm not sure:
First scenario: There is a lot of audible thunder, but no rain at all. This goes on for long enough that it becomes a pretty serious drought.
Second scenario: Lightning strikes a church in town, burning it down, a little while after which it finally starts to rain...gently, breaking the drought in a safe and healthy-for-the-environment way.
Do both of these qualify as an inversion of Thunder Equals Downpour?