[sergj]

Replying to your first point. There is actually a new branch of science called extreme event attribution [1]. Basically all weather events are now analysed to see how much more probable they are due to climate change. You are right one event might be anecdotal and could also have happened without climate change. But looking at the frequency of these events, the probability of extrem weather events has risen. In other words what was a once in a hundred years flood is now a once in ten years flood - keep in mind this is an example and a once in a hundred years flood can of course happen more often. What I am trying to say is we can attribute the trend of extrem weather events to climate change. So the argument that Fiona is more probable in a world with climate change than in a world without climate change is legit.

[1]:https://en.m.wikipedia.org/wiki/Extreme_event_attribution