is this theoretical flooding due to sea-level rise or the possibility that the land on which Seattle sits is subsiding?
or a combination of both?
Over the past 100+ years, sea levels have risen about 2 mm / year rather steadily. In order for sea levels to rise six feet by the end of the century, sea levels would have to rise 22 mm / year for the next 82 years ... more than 10x faster than we’ve seen.
All of these dire predictions are based on a reversal of Coriolis Force.
Sea level is actually rising approximately 2 mm per year. In the next 83 years (the theoretical end of the the century) that amounts to a .... total of 166 millimeters.
Or just over 6-1/2 inches. Wow. they have 5000 homes in Seattle whose front step is now wet at high tide?
The whole Puget Sound area is actually rebounding from the last ice age and the area is rising.
Nearly all of Seattle (saltwater) waterfront is owned or occupied by industrial concerns. The only residential neighborhood that I can think of is Alki - and even if the water level was to rise 6 feet (profoundly unlikely), it would only affect about 500 families.
Most of Seattle residential waterfront is freshwater in the form of Lake Washington, which is separated from the Puget Sound by locks. That magical 6 foot water rise would have no effect.
As usual the left lies.