Because the warmer world of the second half of the 21st century is an inevitability, it's worth looking into the near future to see which cities are going to (potentially) benefit and which will (probably) not benefit from a warming world.

Having lived in San Diego, one of the forecasted losing cities, I have to admit that I never have thought about how close to sea level Coronado "Island" is. Losing it to the rising sea level would definitely put a hamper on the military bases on it, and it's kinda weird to think of San Diego without an aircraft carrier sitting in its harbor.

Having dreaded Phoenix traffic everytime I drove through it in the early 2000s, and having just been there... how long Phoenix survives is up to how greedy its citizens can be. It's not a city that is going to become easier to live in over the coming decades, and so if it wants to survive/grow, it's going to have to keep using more and more resources in an increasingly parched southwest.