Well, the thing is, AGW tends to amplify basically every sort of weather-related natural disaster. It makes storms in general stronger (including hurricanes and snowstorms). It makes droughts more common/severe, because the water that does fall is more concentrated in storms than spread out.One thing I do feel concern about though is the fact that AGW is being linked to any and all weather related natural disasters. On the one hand you have people saying that the snow outside peoples windows is just weather then on the other you have people using a somewhat tenuous link, such as in the case of the Australia floods to push their AGW agenda when the causal relationship simply doesn't support it. In the case of Australia the floods aren't as bad as recent historical floods and yet people are still waving the 'you burned coal I hope you drown in the coming floods' vitriol.
Im just saying the AGW crew aren't doing themselves any favours by remaining silent on these natural disasters when the tenuous link is being proposed.
Now, it is fundamentally impossible to point at a specific event and say that was caused by AGW, but we can say it makes some things worse on average (hurricanes), and some things more frequent (droughts, fires).