That's the job of property speculators. Curiously, the prices they pay seems to indicate that they don't expect it to happen and are putting their money where their mouth is - unlike scientists and reporters who have nothing to lose by being wrong.
There has been a substantial increase in flood insurance costs across the world as reinsurers have adjusted the probabilities of catastrophic flood and storm events. The problem is so big that insurers outright refuse to even contemplate most properties in at-risk zones.
