When Miami Beach celebrates its second centennial in 2115, it’s unlikely city officials will dive into a giant birthday cake in the gardens of the New World Symphony concert hall as they plan to do next year.

With just 3 feet of sea level rise as a mid-range prediction by 2100, much of Miami Beach including that civic landmark would be oceanic at high tide. With the same amount of sea level rise, parts of Surfside, Bal Harbour, large sections of Doral and nearly all of Miami-Dade County south of Homestead also would have ceded to the sea.