The thing with sea levels is that it's not the average that you need to worry about but the extremes. If the average goes up, the average high during extreme ev

The thing with sea levels is that it's not the average that you need to worry about but the extremes. If the average goes up, the average high during extreme events also goes up. Like high tide during a hurricane. And of course the issue with global warming is that it predicts both increases in sea levels and incidences of things like hurricanes. For the amount of damage that hurricanes can do, just refer to the last few ones and consider them a sneak preview of what insurers consider to be likely to be much more regular. Think tens/hundreds of billions of dollars in damage every time it happens