This is not a "climate change is getting worse" story, as I think you're implying :/ (I don't entirely blame you--I doubt you read the article, but I do think the title is misleading.) This is just a story of "The current hurricane categorizing system has always failed to correlate very well with deaths and destruction, because it only factors in wind speed. A category 1 hurricane can sometimes be more disastrous than a higher-category hurricane."