This week's Proceedings of the (American) National Academy of Science has a n article on the subject.
"We document an increasing trend in extreme damages from natural disasters, which is consistent with a climate-change signal. Increases in aggregated or mean damages have been modest, but evidence for a rightward skewing and tail fattening of the distributions is statistically significant a nd robust with most pronounced increases in the most extreme (e.g. top 5% a nd top 1%), of the catastrophic events. This pattern is strongest in temperate regions, suggesting that the prevalence of devastating nat ural disasters has broadened beyond tropical regions and that adaptation me asures in the latter have had some mitigating effects on damages.
John Larkin won't take it seriously until his business gets washed (or blow n) away.