I see. Thanks for providing some context and numbers. Seems to be much larger than I thought. But it could still be that the number of these kinds of hurricanes could go up, no?
It being a cat 4 hurricane was bad enough, but the flooding is largely being caused by the two high pressure systems on either side of Harvey [0][1]. Storms normally aren't held in place for a week straight.
So it may be more important to try to understand whether there'll be more storms + surrounding high pressure systems
So it may be more important to try to understand whether there'll be more storms + surrounding high pressure systems
[0] https://dsx.weather.com//util/image/w/harvey-stall-22aug17.j...
[1] https://www.wunderground.com/news/tropical-storm-hurricane-h...